Gómez-Valdés et al. Lack of Support for the Association between Facial Shape and Aggression: A Reappraisal Based on a Worldwide Population Genetics Perspective. PLoS ONE, 2013; 8 (1)

It is a common misconception that some people are profiled to be angry or aggressive because of their physical appearances, particularly their craniofacial shapes. In addition, there have been some studies suggesting that men with certain facial traits (round-shaped faces) are more likely to develop aggressive and unethical behavior. A new study using a sample of around 5000 individuals from 94 different countries has found no correlation between facial shape and aggressive/criminal behaviors. Researchers analyzed fWHRs (facial width-to-height ratio) and 2D/3D craniofacial landmark coordinates to estimate any possible correlation between skull shape and aggressive behaviors in men. First, they utilized the famous skull collection in Hallstatt/Austria to investigate any potential correlation between skull features and life history parameters of individuals, such as their overall fitness. Second, they analyzed the male prisoners convicted of crimes like inter-personal aggression (homicide, robbery etc.) from Mexico City Federal Penitentiary to see whether there is any relation between skull shape traits and aggressive crimes. Analyses of both databases have found no significant correlation between skull shape traits either with the fitness of males or with their aggressiveness. This study has very important social and political implications in today’s societies, as we unfortunately see many ethnical, racial and even physical prejudices. This comprehensive study has undoubtedly showed once more that physical traits cannot be a reliable predictor of complex human behaviors, which are mostly shaped by external factors such as education and socio-cultural practices.

Biggest Structure in the Universe Discovered

Clowe et al. A structure in the early Universe at z ∼ 1.3 that exceeds the homogeneity scale of the R-W concordance cosmology. Monthly Notices of the Royal Astronomical Society, January 11, 2013

Throughout history, mankind has been trying to answer the questions of “how big” or “how far,” when looking into the vast expanse of the universe. As new technologies are developed, bigger discoveries and consequently bigger numbers are brought to light. An international team of astronomers recently discovered a collection of 73 quasars which form a single structure; the largest structure ever observed in the entire universe. A quasar, short for quasi-stellar object, is the luminous center of a galaxy that surrounds a super massive black hole. The distance of these newly large quasar groups to the earth is about 9 billion light years (1 light year is approximately 9.5 trillion kilometers). The size of these structures is simply mind-blowing. Even if we have a spacecraft that travels at the speed of light, it would still take about 4 billion years to cross. If we put this overwhelming size into perspective, the Milky Way—earth’s home galaxy—is only about 100,000 light-years wide and our neighbor galaxy Andromeda is only 2.5 million light-years away from the Milky Way. So these quasars are 1600 times larger than the distance from the Milky Way to Andromeda. This discovery seriously challenges the size calculations based on the widely accepted Cosmological Principle which assumes that the universe is essentially homogeneous when viewed at a sufficiently large scale. Cosmological Principle predicts that there should not be any structure in the universe larger than 1.2 billion light-years. A four billion light-years wide structure would obviously be an outlier when compared to other structures in the universe and it might contradict with the homogeneity of the universe. However, scientists think that such contradiction would not necessarily falsify the Cosmological Principle originally established by Albert Einstein. It might only change the assumptions of the theory that define at which scale the universe can sufficiently be viewed.

More Twists on Double Helix

Biffi et al. Quantitative visualization of DNA G-quadruplex structures in human cells. Nature Chemistry, 20 January 2013.

About 60 years ago, on April 25th 1953, James Watson and Francis Crick published a one-page paper where they described the “double helix” structure of the DNA, the molecule that carries genetic information from parent to offspring. This discovery not only revolutionized the biological sciences and medicine but also dramatically changed the way we perceive life, nature and most importantly ourselves. Yet, new findings on DNA structure keep surprising us. Scientists from Cambridge University discovered the first quadruple helix—a four-stranded DNA structure in human cells which they named “G-quadruplex.” These structures were previously observed in test tubes but they were never found in cells. The building blocks of DNA molecules consist of four different bases: Adenine (A), Guanine (G), Cytosine (C) and Thymine (T). G-quadruplexes (G stands for Guanine) are formed by four guanine bases that forms a square DNA helix. Researchers found that these structures are enriched in rapidly-dividing cancer cells, specifically at the ends of chromosomes called telomeres. When researchers targeted and trapped these quadruple DNA structures with synthetic molecules, they found that DNA replication slows down and cell division is blocked. Researchers suspect that these quadruple DNA structures in telomeres of cancer cells could explain why cancer cells rapidly proliferate and divide. It is still not clear whether G-quadruplexes exist in healthy cells but targeting these structures in cancerous cells with pharmacology seems to be a promising method to stop the spread of cancer.

Today, more than 1 billion people are suffering from the lack of potable water. About 2.3 billion people (41 percent of the earth’s population) live in regions with water scarcity; this number is estimated to be 3.5 billion by 2025.1

96.5 percent of the world’s water is found in seas and oceans, and the remainder is found as ice caps, brackish water, and fresh water sources (e.g. lakes, rivers, and ground waters). To overcome water shortage problems, methods such as water conservation and dam construction have been applied for several years, but they are not enough against increasing water demand and decreasing fresh water sources.2

Water is also very important for generating energy, and vice versa. The largest portion of U.S. electric production is provided by thermoelectric power generation, where steam-driven turbine generators are used to generate electricity. In 2000, thermoelectric power plants used 39 percent of all fresh water sources in the United States.3 All these reasons make the production of drinking water a worldwide issue.

Desalination

Since most of world’s water supply is found in oceans and seas, desalination is the process of removing salts and minerals from either ocean or brackish water to make it safe for human consumption and use. The most widely applied desalination processes are divided into two main categories, thermal distillation processes and membrane processes.

Desalination via thermal distillation methods, which separate liquid mixtures based on their boiling points, mainly fall into three categories: multi-stage flash (MSF), multi-effect distillation (MED), and mechanical vapor compression (MVC). Thermal distillation processes require the evaporation of water while leaving the salt in a concentrated brine. Middle Eastern countries mainly use thermal-based desalination plants to produce fresh water because of their easily accessible fossil fuel sources.2, 4

Membrane-based separations are the main choice of producing potable water in countries outside the Middle East. More than 50 percent of the newly installed desalination plants have been using reverse osmosis (RO) membrane technology (since 2001).2

Membrane separations

A membrane is an interphase between two adjacent phases acting as a selective barrier, regulating the transport of substances between the two compartments. It is a very thin film that allows passage of some types of substances while preventing the passage of other substances, depending on their sizes. Membranes used for separation technology gave rise to an interdisciplinary area including many fields of science and engineering such as chemistry, chemical engineering, material science, process engineering, environmental science, ecology, and economics.5, 6 Today, the membrane industry is impressively large. The membrane separation technology market is quite diverse and ranges from medicine to the chemical industry, and the most important markets are medical devices and water treatment. There was a $2 billion sale of synthetic membranes worldwide in 2003.6

Water purification membranes

Water treatment processes employ several types of membranes. They include microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) membranes. They are designed to remove materials of increasing sizes. MF membranes have the largest pore size and typically reject large particles and various microorganisms. UF membranes have smaller pores than MF membranes and, therefore, in addition to large particles and microorganisms, they can reject bacteria and soluble macromolecules such as proteins. RO membranes are effectively nonporous and therefore exclude particles and even many low molar mass species such as salt ions, organic substances, etc.7 NF membranes are relatively new and are sometimes called “loose” RO membranes. They are porous membranes, but since the pores are ten of angstroms or less, they exhibit performance between that of RO and UF membranes.8 Of these membranes, NF and RO membranes constitute the dominant technology for desalination of water.9

2.1 Nanofiltration Membranes

Membranes for nanofiltration (NF) are usually comprised of cellulose acetate or aromatic polyamides. NF allows diffusion of organic compounds, and rejects some salts with low pressures being applied. NF itself cannot purify seawater to drinking water standards, but it is a process that can be used to produce mildly salty water, or as a water-softening technique.2, 4 When NF is coupled with RO, then it can be used to turn seawater into drinking water.10

Nanofiltration membranes usually have negative charges (e.g., carboxylate groups, sulfonate groups, etc.), and as a result, ion repulsion is a major factor in determining salt rejection. More highly charged ions, such as sulfate, are more highly rejected than monovalent ions, such as chloride, by a negatively charged nanofiltration membrane. In particular, NF membranes are used to remove divalent ions such as calcium and magnesium, which are mainly responsible for water hardness. These membranes also usually display good rejection of organic compounds with molecular weights above 200 to 500 grams.2,11,12

2.2 Reverse osmosis membranes

Osmosis is a natural process in which water molecules move across a semipermeable membrane from a lower solute concentration area to the higher solute concentration area. Water flows until a chemical potential equilibrium of water is established. When equilibrium is reached, the pressure difference between the two sides of the membrane is equal to the osmotic pressure of the solution.12

Reverse osmosis (RO) is the process of forcing water from a region of high solute concentration through a membrane to a region of low solute concentration by applying a pressure that is greater than the osmotic pressure. As a result, separation of water from the solution occurs as pure water from the high concentration side to the low concentration side. The RO process includes a feed water source, feed pre-treatment, a high-pressure pump, RO membrane modules and post-treatment steps.

RO membranes are capable of rejecting monovalent ions such as sodium and chloride, which makes the RO process a valuable method for desalination. Membranes used for RO processes have salt rejections of more than 99 percent. RO membranes do not have distinct pores, but rather rely on free volume within the polymer film.

RO membrane separations depend highly on the properties of the polymer film such as the chemical and physical structure of the membrane material. Desired RO membranes should be resistant to chemical substances and microbial organisms, stable over a long time both mechanically and structurally, and have ideal separation properties such as high water flux, high salt rejection, chlorine, and fouling (clogging of membrane pores) resistance.

Approximately one billion of six billion people in the world live in water-stressed areas, and RO membrane technology is the leading desalination technology to overcome the problem of insufficient clean water and estimated to continue its leadership in the near future.13 Scientists and engineers are extensively investigating the development of the most efficient membrane desalination technology to produce the cheapest potable water.

On the other hand, cells use membranes, though scientists do not try to further develop them, since they were already designed in a perfect manner. Cellular membranes have a phospholipid structure with embedded proteins. They control many different kinds of transportations of substances in and out of cells (e.g. sugar, drugs, ions). They are so well designed that they know which substances are helpful or harmful for the cell, and decide on the passage of substances based on that. Many researchers have tried countless times for many years to produce an equally wonderful membrane technology for making clean water. But cellular membranes, consisting of hundreds of functions in living organisms, do not form spontaneously.

REFERENCES

1) R.F. Service, Freshwater resources, desalination freshens up. Science, (2006). 313, 1088- 1090.

2) L.F. Greenlee, D.F.Lawler, B.D. Freeman, B. Marrot, P. Moulin, Reverse osmosis desalination: Water sources, technology and today’s challenges. Water Research (2009), 43, 2317-2348.

3) T.J. Feeley, T.J. Skone, G.J.Stiegel, A. McNemar, M.Nemeth, B. Schimmoller, J.T. Murphy, L. Manfredo, Water: A critical resource in the thermoelectric power industry.Energy (2008), 33, 1-11.

4) G. A. Tularam, M. Ilahee, Environmental concerns of desalinating seawater using reverse osmosis. J. Environ. Monit.(2007), 9, 805–813.

5) P. Vandezande, L. E. M. Gevers, I. F. J. Vankelecom, Solvent resistant nanofiltration: separating on a molecular level. Chem. Soc. Rev.(2008), 37, 365–405.

6) M. Ulbricht, Advanced functional polymer membranes. Polymer (2006), 47, 2217–2262.

7) R.H. Perry, D.W.Green, Eds., Perry’s Chemical Engineers’ Handbook, 7th ed., McGraw-Hill: New York, 1997.

8) Sagle, A., and B. Freeman, “Fundamentals of Membranes for Water Treatment,” in The Future of Desalination in Texas: Volume 2, Report Number 363, Texas Water Development Board, Austin, TX, pp. 137-154 (2004).

9) H.B.Park, B.D.Freeman, Z.Zhang, M.Sankir, J.E.McGrath, Highly Chlorine-Tolerant Polymers for Desalination, Angew. Chem. Int. Ed. (2008), 47, 6019-6024.

10) N. Hilal, H. Al-Zoubi, N. A. Darwish, A. W. Mohammad, M. Abu Arabi, A comprehensive review of nanofiltration membranes: Treatment, pretreatment, modelling, and atomic force microscopy, Desalination (2004), 170, 281-308.

11) A. Gorenflo, D. Velazquez-Padron, F.H. Frimmel, Nanofiltration of a German groundwater of high hardness and NOM content: performance and costs. Desalination (2002), 151, 253-265.

12) M.E.Williams, A Brief Review of Reverse Osmosis Membrane Technology,EET Corporation and Williams Engineering Services Company, Inc., Harriman, TN, 2003.

13) K. P. Lee, T. C. Arnot, D. Mattia, A Review of Reverse Osmosis Membrane Materials for Desalination – Development to Date and Future Potential. J. Membr. Sci. 370 (2011) 1-22.

Statements like “God must have createdwith special care” are most inconvenientand disagreeable. Even for the mostsplendid things, God Almightycommands “Be! and it is.”

Imagine yourself in Spain, walking through the Alhambra palace. As you gaze at the artistry and beautiful architecture, you feel an urge to meet the master who built it. When you study other works of art, you see that throughout history, artists have used materials such as marble, iron, stones, wood, and glass, which are all found in abundance throughout our world, scattered in different places. The master architect however, uses the knowledge and willpower granted to him as it is represented in the spirit of a civilization. He transforms these things into living history. In other words, the physical structure and artistry of the Alhambra palace may stimulate a thinking mind to understand the whole of Andalusian civilization.

In the same way, imagine a clock. It is made of various parts: mills, springs, screws, etc. that are all made of materials like iron, nickel, and copper. Again, these can all be found in abundance around the world. An intelligent clockmaker uses these items as he accurately plans, calculates, and measures the correct number and placement of the mills, how they turn, their diameters, and other details that all require very sensitive adjustments. The mastery of craftsmanship contributes to the precision, and thereby to the value of the clock. Although the famous evolutionist Richard Dawkins claimed that such an accurate machine could be made by a “blind clockmaker,” I am compelled to grant the genius of accuracy with a little more respect to suggest that a precise clock requires the attention of a focused eye.

Just as with Alhambra and the clock, the genius of artistry and precision, when we perceive of the human being as work of art, we begin to understand the mastery that lies behind its development. Highlighting the amazing factual data about our physical and chemical structure, in this article, I try to find an answer to the question “what is a human being?” The resulting data reveals the degree to which human beings exist as magnificent works of art. My intent is to illustrate the intention of the Ultimate Master behind human existence.

Here are some basic facts about the approximate numbers, size, and longevity of our cells, the smallest living units in our body:

Facts in total numbers

Cells in a human body: 100 trillion

The variety of cells: 210

Cells dying every second: 50 million

Cells being created every second: 50 million

Red corpuscles: 25 trillion

White corpuscles: 25-100 billion

Neurons: 30 billion

(for a comparison, there are 100,000 neurons in the body of a fly and 10 million in the brain of a mouse)

Neurons in the brain cortex: 10 billion

Neurons in the cerebellar cortex: 10 billion

Synapses of all neurons: 100 trillion

Cells dying in a normal day: 50-100 thousand

Cells activated at a remembering process: 10-100 million

Cells producing gastric acid: male 1 billion, female 820 million

Size of sperms-the smallest cells: 3-5m (1 micrometer=10-6 m)

Size of glial cells in the brain: 5m

Diameter of egg cells-the biggest cells: 100-120 m

Average size of a liver cell: 30-50 m

Diameter of a red corpuscle: 7 m

Diameter of a kidney cell’s nucleus: 6.2 m

Chromosomes’ adjoined width at metaphase: 4.5 m

Diameter of the nucleus of a ganglion cell in the spinal cord: 1.2 m

Diameter of a mitochondria: 0.5-1.2 m

Diameter of a lysosome (enzyme carrier): 0.2-0.5 m

Microvilli on the small intestinal cells: 100nm (1 nanometer=10–9 m)

Diameter of a ribosome:12-20nm

Thickness of a cell membrane: 8.0nm

Diameter of a nexus on a cell membrane: 3.0nm

Diameter of a DNA double helix: 2.0nm

Length of an amino acid molecule: 0.8-1.1nm

Diameter of an atom: 0.1-0.5nm

Longevity of cells

Anal epithelial cells: 4.3 days

Epidermis cells: 19.2 days

Bowel epithelial cells: 10 days

Intestinal mucous cells: 1.4 days

Rectal mucous cells: 6.2 days

Bladder epithelial cells: 66.5 days

Lip epidermis cells: 14.7 days

Sole epidermis cells: 19.1 days

Tracheal epithelial cells: 47.6 days

Alveolar cells: 8.1 days

Gastric cardia epithelial cells: 9.1 days

Pyloric epithelial cells: 1.8-1.9 days

Inner ear epithelial cells: 34.5 days

Red corpuscles: 120days

Neutrophils: 4-5 days

Eosinophils: 10 days

Lymphocytes: 5 days to years

Monocytes: several months

Liver cells : 222 days

Kidney epithelial cells: 286 days

Thyroid epithelial cells: 287 days

Bone cells: 25-30 years

Neurons Lifelong

The cells which do not divide and reproduce:

Egg cells, brain cells, neurons, sweat gland cells, and hair papilla cells.

The human body is thus similar to a massive 3-D jigsaw puzzle; an incredibly complex one with trillions of minute-size pieces. It begins with a collection of 0.1 to 0.5 nanometer atoms that all come together to make up the elements of cells. From these elements-mitochondria and the like-a 100 trillion cells are formed that all come together to form the organs, muscles, tissue, and bones of the human body. All come together in a splendid fashion and all work together as if they are well aware of each other. All of this precision comes to together to form something that is both precise and beautiful.

This is not all. The process is renewed every second as cells wear out, die, and are reborn. In a few years, the body is an entirely new thing. Even more, the longevity of cells varies; some live only 1.4 days (intestinal mucous cells), while others last for months. Your body replaces cells at exact moments with perfect timing. No pause is allowed, and this is supposed to go on for some seventy years. It seems impossible to believe that such a thing can ever happen, that a “blind puzzle-maker” or any other chance-based mechanism could produce such a result. But here we are, living examples of beauty and precision. Somebody has already made us, didn’t He?

A major achievement in the computation of π was made around 250 BC. Archimedes of Syracuse (287-212 BC) had the brilliant idea to approximate π by using inscribed and circumscribed polygons that approached a circle (see the figure). The circumference of a circle of diameter 1 is π. He inscribed a polygon of n-side and computed its circumference.

This circumference is clearly less than π. Similarly, he circumscribed another polygon of n-side and computed its circumference. This time the circumference of the polygon is greater than the circumference of the circle which is π. So, he arrived at the inequality 3 < π

In the following centuries, some people used Archimedes’ technique, using polygons with more sides, and arrived at more accurate estimates for π. Ptolemy (c. 150 AD) found the value up to 4 places, Zu Chongzhi (c. 500) 6 places, al-Khwarizmi (c. 800) 4 places, al-Kashi (c. 1430) 14 places, Roomen (c. 1580) 17 places, while Van Ceulen (c. 1600) arrived at 35 places.

Unfortunately, Archimedes’ idea was the only mathematically significant approach for almost 2,000 years. The second major step in this direction came with the Renaissance. The general progress in theoretical mathematics gave a great push to the computation of π. With the aid of calculus and infinite series Gregory found the following formula: arctan(x) = 1- x/3 + x3/5 – x5/7 +… He then plugged in x=1, arriving at π/4 = 1- 1/3 + 1/5 – 1/7 +…

This formula looks very nice to begin with, but unfortunately it is not very useful for the computation of π. To get the first 4 places right, we need 10,000 terms of the series, making it very untidy. This formula was considerably improved later by others, and went on to become very useful for computation. By using trigonometry, Machin found the following formula for π: π/4 = 4arctan(1/5) – arctan(1/239).

With Gregory’s expression for arctangent, this formula became so powerful that one could arrive at 5 places of π in just 6 terms. Again, with such a formula, the only problem left is that the computation is quite tedious. In the 18th and 19th centuries, Machin, Rutherford, Shanks, and others improved the calculation of π to 700 digits.

On the other hand, amazing facts were discovered about the nature of π. In 1761, Lindemann was the first to show that π is irrational, which means that it cannot be written as the ratio of two integers, like 22/7, 353/113, etc. Then he proved that it is transcendental, or “very irrational,” i.e. it cannot be a root of any integer coefficient polynomial. In other words, it cannot be A10,A2 + A3, 3A29, etc. These facts imply that π is a very irregular number, that there is no pattern in its decimal places, and that one cannot express π in a simple algebraic way.

So, by the beginning of 20th century, we were able to compute only 700 digits of π. In the first quarter of the last century, the brilliant Indian mathematician Ramanujan accomplished the third great theoretical leap in or the computation of π, and came out with many impressive infinite series. He arrived at sound algebraic expressions which are very close to π.

In the second quarter of the last century, computers came onto the scene. With the arrival of computers, pen and paper calculations were rendered obsolete. After Ramanujan’s time, the people calculating π became programmers rather than mathematicians. In 1955, more than 3,000 digits were calculated at the Naval Ordnance Research Center in only 13 minutes, almost 500 times faster than the ENIAC only 6 years later. In 1959 an IBM 704 calculated more than 16,000 digits of π. In 1961 an IBM 7090 calculated over 100,000 digits of π in around 9 hours, in 1966 an IBM 7030 calculated 250,000 digits of π, while a year later a CDC 6600 calculated 500,000 digits and in 1973 a CDC 7600 calculated 1,000,000 digits of π in 23 hours.

However, the techniques for calculating π were still using arctangents which have a quadratic growth rate. In 1976 Eugene Salamin rediscovered a formula developed by Gauss. It was calculation intensive in Gauss’ time, but well suited for modern super computers the size of the Whitehouse and had a much lower growth rate than the arctangents formulas did. In 1982, a HITAC M-280H calculated 16 million digits of π in 30 hours, in 1988 a Hitachi S-820 calculated 201 million digits in 6 hours, while in 1989 both the 500 million and 1 billion π calculation records were broken. In 1995, 6 billion digits were calculated, in 1996, 8 billion, and finally in 1997 a Hitachi SR2201 calculated 51 billion digits of π in 29 hours. This Hitachi machine had 1,024 processors and 212 gigabytes of RAM. However, in September of 1999 a new record of 206,158,430,000 was announced. The calculation was set by Yasumasa Kanada and the University of Tokyo. The calculations took over 37 hours, with 43 hours more needed to verify them. The machine used contained 817GB of main memory and consisted of 128 Hitachi SR8000 processors.

So, we can see that this mysterious number has attracted the attention of many people for centuries; it seems set to continue to do so. It might not seem very interesting to compute billions of digits of one transcendental number, and it might even seem pointless. The real point here is not the billionth digit of the number, but the excitement and the beauty of the problem, and the challenge to human intelligence, like with so many other mathematical problems.

References

• J. J. O’Connor and E. F. Robertson, www.gap.dcs.stand.ac.uk/history/HistTopics /Pi_through_the_ages.html
• D. Hazeghi, www.myownlittleworld.com/pi /history.html
• D. H. Bailey, J. M. Borwein and P. B. Borwein, www.cecm.sfu.ca/organics/papers/borwein /paper/html/paper.html
• Lazarus Mudehwe, www.geocities.com/CapeCanaveral /Lab/3550/pi.htm
• www gap.dcs.stand.ac.uk/history/HistTopics/Pi_chronology.html

Ancient people, considering it very important to determine Earth’shape, derived two important clues from the night skies. According to Aristotle (384-322 bce), these were lunar eclipses and the North Star. Lunar eclipses occur when the sun, Earth, and the moon line up in such a way that Earth temporarily blocks the sun’s light from reaching the moon while its circular shadow gradually crosses the moon’s face. The North Star appears lower in the sky the further south we go: at the Equator it lies directly on the horizon, at a latitude of 45 it is 45 above the horizon; and at the North Pole it is directly overhead. However, it is not visible south of the Equator.(1) As both of these indicate a spherical Earth, the scholars of that time discarded the idea of a flat Earth.

The more challenging question was how to determine Earth’s size. Eratosthenes of Alexandria (third century bce) had a simple yet brilliant idea: insert a gnomon (a vertical stick) into a level piece of ground. This enabled him to determine noon’s exact time (when the shadow was the shortest). It was also used as a compass, for in the Northern Hemisphere the gnomon’s shadow points north.

But can such a simple device determine Earth’s size? Aswan, located about 500 miles south of Alexandria, sits on the Tropic of Cancer. So, at noon of June 21 (the summer solstice), a gnomon inserted there has no shadow. By doing just that in Alexandria, Eratosthenes found that the angle was 1/50 of a circle’s circumference (i.e., 2p/50). In other words, the angle at Earth’s center corresponding to the arc between Aswan and Alexandria on Earth’s surface is 1/50 of a circle’s circumference. Since the distance between Alexandria and Aswan is 500 miles, Earth’s circumference should be 25,000 miles, which is its actual circumference.(2) Thus, Earth’s size and shape was pretty well established over 2,000 years ago.

This knowledge was lost to Europe when the ancient civilizations crumbled. But Islamic civilization and culture, which was rising at roughly the same time as the West was declining, produced scholars and scientists who translated and refined quite a bit of this ancient knowledge. For example, in 1424 al-Kashi used Archimedes’ method of computing to determine its values to 16 decimal places. Ulug Beg compiled the greatest star catalog known at that time. During al-Ma’mun reign (813-833), al-Khwarizmi measured one degree of latitude on Earth’s surface and obtained the result of 57 miles. This means that Earth’s circumference is 360×57 = 20,520 miles.(3) Thus, in the ninth century, Muslim scientists knew that Earth was spherical and had a good idea of its size. Most Europeans at that time, believed that Earth was flat and the universe impenetrable.

The Qur’an describes Earth’s geographical shape and change in that shape: Do they not see how We gradually shrink the land from its outlying borders? Is it then they who will be victors? (21:44).(4) The reference to shrinking could relate to the now-known fact that Earth is compressed at the poles.

At a time when people generally believed that Earth was flat and stationary, the Qur’an explicitly and implicitly revealed that it is round. More unexpectedly still, it also says that its precise shape is more like an ostrich egg than a sphere: After than He shaped Earth like an egg, whence He caused to spring forth the water thereof, and the pasture thereof (79: 30-32).

The verb daha’ means “to shape like an egg,” and its derived noun da’hia is still used to mean “an egg.” As this may have appeared incorrect to pre-modern scientists, some interpreters misunderstood the word’s meaning as “stretched out,” perhaps fearing that its literal meaning would only confuse people. Modern scientific instruments recently established that Earth is shaped more like an egg than a perfect sphere, and that there is a slight flattening around the poles and a slight curving around the Equator.

The West receives “lost” knowledge

An enduring Western myth is that Columbus had to overcome a pervasive belief that he would sail off the edge of a flat Earth by sailing west to Asia. This myth stems in part from compressing the past and conflating the early Middle Ages, when Europe’s belief in a flat Earth was widespread, with the late Middle Ages, when Europe’s knowledge had caught up with and partially surpassed that of ancient Greece and medieval Islam.

During the Renaissance, Europe came into contact with “lost” knowledge by translating Greek and Arabic works. One important book was Ptolemy’s Geography, which accepts Earth’s spherical shape. Geography once more became available in the original Greek, which was not widely known in the thirteenth century. This book was translated into Latin in the late fifteenth century and became widely known. Columbus owned a copy printed in 1479.

By the time of Columbus, the idea of a spherical Earth was widely accepted in theory. Columbus believed this and wanted to sail west to the eastern shores of Asia. Earth’s size was the real issue. Ptolemy’s estimate was as much as 20% too low. Also, he vastly overestimated Asia’s size. The resulting map depicted an Earth with oceans between Europe’s western tip and Asia’s eastern tip, which was well within range of the provisions that ships of that time could carry. Columbus’ estimate of the distance to Asia was wrong, as was his assumption that there was no land between Europe and Asia. Fortunately for him, these two “wrongs” made a “right,” with all of its attendant fame and glory.

The Shape of the Universe

So far, we have given external information (i.e., lunar eclipses and the North Star) about Earth’s spherical shape based upon its position in the universe. If we use this method to determine the universe’s shape, we must observe it in an external manner. As this is not possible, let’s reconsider the question of Earth’s shape with a slight change: Can we determine Earth’s shape by using measurements and observations done only on its surface, and thereby acquire intrinsic information that can inform us of the universe’s shape?

Karl Gauss (1777-1855) answered this question positively by inventing “curvature,” which measures a given surface’s “bumpiness” at a specific point. A flat piece of paper has no bumps and so its curvature is zero. But if we look at a sphere at each point, we see some bumpiness. Gauss called such bumpiness “positive curvature.” Another kind of bumpiness is “saddle-shaped.” We can think of positive curvature at a point as follows: If we put a piece of flat paper on a surface at that point, the surface lies totally on one side of the paper. But in negatively curved space, this cannot happen.

To describe this concept formally (minus some technicalities), assume constant curvatures on the shapes in question. In other words, the shape is totally symmetric and every point has the same amount of bumpiness. There are several ways to describe curvature. Gauss’s formulation for curvature is brilliant. But before that, let’s look at his intrinsic proof for a spherical Earth. Imagine an orchard so large that any deviation from flatness is perceptible. First plant trees on the Equator every 100 kms (the approximate distance between two meridians on the Equator). Then plant another tree 100 kms (the approximate distance between two parallels) north of each tree, and do this several times. If Earth is flat, the distance between them would be same. But since the distance between the two consecutive trees (on the same parallel) decreases, Earth is spherical.

Having seen that an intuitively positive curvature implies a spherical shape, we want to follow this method to get an idea about the universe’s shape. Georg Riemann (1826-66), trying to do just that, invented “curved space” and explained how to compute its curvature. We could launch six probes at equally spaced points along the Equator, and have each of them continually monitor the distance to the two adjacent probes. If space is flat, the distances at any point in its journey would equal the distance from the probe to Earth’s center (an equilateral triangle). For negative curvature, the distance between probes would grow faster than the distance the probe had traveled from Earth; in positively curved space, the distance between probes would grow slower than the distance covered by the probes since leaving Earth.

There are two common misconceptions about the curvature of space. The first one is that curvature is a rather vague or qualitative concept. In reality, it is quite precise and assigns to each point in space and each direction at that point an exact number determined by the shape of the space near the specific location. The second one is that to describe curved space, one must think of it as “curving” into a fourth dimension. This can be useful in visualizing curved space for people familiar with four-dimensional Euclidean space (four-dimensional coordinate space). Unfortunately, science popularizers and science fiction writers often lace this concept with mystical overtones. This is more likely to confuse average people. In other words, measurements made in ordinary three-dimensional space may disagree with the results embodied in Euclidean geometry, for curvature measures the degree and kind of deviation from the Euclidean model.

Riemann also proposed a radically different (non-Euclidian) model for the universe: “spherical space.” This would be the case if space had a constant positive curvature. Based on this, he said that the universe should be a hypersphere (a three-dimensional sphere). The usual sphere is two-dimensional and lives in three-dimensional Euclidean space. In general, n-dimensional sphere is described as in the (n+1)-dimensional Euclidean space, and the set of points whose distance from origin (the point 0) is 1.

The more intuitive way to describe hypersphere comes from the usual sphere. Starting from a point in the sphere called the South Pole, and as we go in a direction in the sphere, we see concentric circles becoming larger until we reach the Equator, after which they become smaller and we finally reach North Pole. The situation is similar in hypersphere. Start from a point in the sphere called the South Pole, and as we go in a direction in the sphere, the concentric “spheres” become larger until we reach the Equator, after which they become smaller until we reach the North Pole. We can generalize this concept for any sphere of any dimension.

Earlier philosophers speculated that the universe was infinite in extent; others (e.g., Plato, Aristotle, Newton, and Leibniz) rejected this as implausible. But the alternative seemed equally dubious: If it did not go on forever, then “like the flat Earth” it had to end somewhere. And, what was beyond that? This model solved the Euclidean paradox of the universe’s “edge,” for if the universe is positively curved, it can be finite in extent and still not have any “edge.” In Riemann’s model, every part of the universe looks just like every other part, as far as shapes and measurements go.

Qur’an 51:47-48 mentions the universe’s spreading out or expansion in space: And the firmament: We constructed it with power and skill, and We are spreading it. This verse reveals that the distance between celestial bodies is increasing, which means that the universe is expanding.

Hubbel’s law

The most surprising discovery of the twentieth century was made by Edwin Hubble in 1929: The universe is not static, but is in a state of rapid expansion. Based upon his observations, he stated Hubble’s Law: Other galaxies are receding from us, the rate at which they recede depends upon their distance, and there is a constant ratio (the Hubble constant) between their velocity and their distance from us.

This law’s most dramatic consequence is what it tells about how we got to where we are now. If distances between galaxies increase as we look toward the future, they must decrease as we go back in time. Each ring of galaxies must have been closer to us in the past; the further away (or back in time) we go, the closer they would have been, and the faster they appear to be moving toward us.

Hubbel’s evidence was limited to a few relatively nearby galaxies. Over the years, however, thousands of observations extended and refined the measurements, and confirmed the general correctness of the velocity-distance relation. Current best estimates are that those galaxies are a billion light-years away (a light-year is roughly 6 trillion miles). Assuming that light always travels at the same speed, those galaxies must have been 1/20 of a light-year closer to us each year in the past. To have ended up a billion light years away, they must have started at exactly the same point as we did “the Big Bang” some 20 billion years ago.

Let’s start by using concentric rings of galaxies at intervals of a billion light-years. Then there are 20 rings, because five rings from us represents galaxies 5 billion light-years distant from us. To see them, we need to see their light that has been traveling for 5 billion years. Thus, we now see their position 5 billion years ago. As there was nothing 20 billion years ago, the outmost ring must the twentieth ring. This might sound paradoxical, as the circles of galaxies seem to grow larger as they move further away from us. However, the paradox is only apparent. Assuming Earth is in the South Pole and that the rings are a sphere’s latitudes, the rings become larger by the Equator and then become smaller until, in the twentieth ring, we reach the North Pole. This time, the rings are spheres and thus fit in the hypersphere. So Hubble’s Law supports our model of hypersphere for the universe.

But how can an expanding universe fit into our picture? In the sphere, the whole surface is expanding, just like inflating a balloon. So the distance from us (at Earth) to the Big Bang is increasing in all directions. In other words, any two points in the universe recede from each other, just as any two points on the balloon recede from each other during inflation.

The issue of time

So far, we have considered the universe’s shape at a fixed time. But, in physics, it is useful to consider space and time together. After Einstein’s brilliant publications about special relativity, Hermann Minkowski (1864-1909) proposed a very useful four-dimensional space-time model as the fabric of the physical universe. In a global picture, each fixed time represents a thin slice of space-time. Like an onion, each layer (assuming there are infinite very thin layers) corresponds to the universe at different fixed times. Given that each fixed time is a hypersphere, the layers are hyperspheres. According to Hubble’s Law, the hypersphere becomes larger as time passes. Just like an onion, the inner layers are smaller and the outer layers are larger.

In an ordinary onion, the layers are usually spheres; in the universe, the layers are hyperspheres. Assuming that the outer-most slice represents the universe at this time, the space-time “so far” is a four-dimensional onion, with layers of the universe at different times. The center of this “onion” corresponds to the Big Bang. We receive the picture of space-time until “this time.” Now, let mathematics predict the future of the space-time, just as Newton’s laws allowed a detailed description of the solar system’s future course. As time evolves, the universe expands, distances between galaxies grow, and gravity weakens. Thus, the space-time curvature diminishes and successive hyperspheres grow at a slower rate.

Two possibilities emerge: The hyperspheres continue to grow indefinitely, although at an ever-decreasing rate, or reach a maximum size and start to contract, in exactly the same fashion as the parallels of latitude on Earth: starting at the North Pole, growing until they reach their maximum size at the Equator, and then begin contracting toward the South Pole. If the universe contracts, distances between galaxies would decrease, gravity and curvature would increase, and the successive hyperspheres would shrink ever faster, eventually contracting into a single point: the “Big Crunch.”

We could then draw a map of the universe as a succession of hyperspheres growing in size for during the first half of its life and contracting during the second half. All space-time would then form a kind of super-hypersphere a four-dimensional object known as a “four-dimensional sphere.”

Conclusion

At a fixed time, the universe should be a hypersphere. When the time dimension is added, space-time should be super-hypersphere, with a “Big Bang” like the South Pole, each fixed time of the universe corresponding to the parallels, and finally a “Big Crunch” corresponding to the North Pole in our space-time model.

Almost everybody has heard that time is the fourth dimension. Even though this concept is easy to imagine, people find it hard to understand because of its mystification by science popularizers. We live in three-dimensional space. This means that I can parameterize the universe such that I can describe any point in it by using just three letters (a, b, c).

Footnotes

1. All of these statements are only approximately true. They would be exactly true if the North Star was precisely overhead at the North Pole, instead of being off center by about 1.
2. The real estimate might not be 25,000 miles, as we do not know the exact correspondence between ancient and current measurements. However, this was a very good estimate for that time.
3. Despite the potential errors mentioned in footnote 2, this also was a good estimate for that time.

Enron in only the poster boy for the type of greed running rampant in today’s multinational corporate world. Despite the rhetoric spilling over the airwaves of the world media, the truth cannot stay hidden for very long in this age of information. The world’s current level of violence is tied directly to the greed of such corporations and so-called leaders who care nothing for the people’s general welfare. They have sold their souls, as the cliché goes, joined hands with Satan, and are ready to ride off into the sunset.

I am not referring to any particular country, people or hemisphere. The greed that we see today exists among all races, religions, and nations. Granted, some may be guiltier than others, especially in light of current world events, but the evil force of greed does not discriminate. Satan has used greed to dupe many people, even Muslims. As Abdullah Yusuf Ali comments in his Qur’anic translation: What an evil choice he makes in committing treason against his own Benefactor (Allah) by going after the petty baubles of this world’s wealth of fleeting gains. How eloquent and true. Greed is nothing but selling our fate in the akhirah (the Hereafter) for this world’s temporary cheap thrills “ often at a tremendous expense to others.

Some facts you should know

So just how bad has it gotten? To what degree has greed enveloped the entire world? The following provides a shocking glimpse:

– In a statement by the Institute for Policy Studies, the group said that 497 billionaires registered a whopping collective wealth of 1.54 trillion dollars. This is way above the combined gross national products of all the nations of sub-Saharan Africa, which stands at only 929.3 billion dollars, or those of the oil-rich regions of the Middle East and North Africa 1.34 trillion dollars.1

– This collective wealth of the 497 is also greater than the combined incomes of the poorest half of humanity, says IPS.2

– Last week, the U.S. government announced that it was building the biggest-ever war machine. Military spending will rise to $379 billion, of which $50 billion will pay for its ˜war on terrorism.’3

– The wealth of the Forbes 400 richest Americans grew an average $1.44 billion each from 1997-2000, for an average daily increase in wealth of $1,920,000 per person ($240,000 per hour, or 46,602 times the U.S. minimum wage).4

– Funds in the hands of U.S. money managers grew from $1.9 trillion in 1980 to $17 trillion in 2000. While those funds were under the control of fiduciaries (half the funds are due to tax incentives), the pay gap between top executives and production workers in the 362 largest U.S. companies soared from 42:1 in 1980 to 475:1 in 1999.5

– The financial wealth of the top one percent of U.S. households now exceeds the combined household financial wealth of the bottom 95 percent.6

– The top fifth of U.S. households claims 49.2 percent of national income while the bottom fifth gets by on 3.6 percent.7

Of course, these all refer to the U.S. However, the U.S. and the western world are not alone in being the culprits of such distorted wealth distribution and inequality. For example,

– In Indonesia, 61.7 percent of the stock market’s value is held by that nation’s fifteen richest families. The comparable figure for the Philippines is 55.1 percent and 55.3 percent for Thailand.8

The impact of such greed is devastating for the rest of the world. Consider these facts:9

– Eighty countries have per capita incomes lower than a decade ago. Sixty countries have grown steadily poorer since 1980.

– In 1960, the income gap between the fifth of the world’s people living in the richest countries and the fifth in the poorest countries was 30:1. By 1990, the gap had widened to 60:1. By 1998, it had surged to 74:1.

– From 1995 to 1999, the world’s 200 wealthiest people doubled their net worth to $1,000 billion.

– Three billion people presently live on $2 or less per day, while 1.3 billion of those get by on $1 or less per day. With the global population expanding by 80 million each year, World Bank President James D. Wolfensohn cautions that unless we address the challenge of inclusion, 30 years hence we may have 5 billion people living on $2 or less per day.

– Two billion people suffer from malnutrition, including 55 million in industrial countries. Thus, in 3 decades, neoliberal-style globalization could create a world where 3.7 billion people suffer from malnutrition.

– The UNDP’s assessment: Development that perpetuates today’s inequalities is neither sustainable nor worth sustaining.

Although the above facts offer just a glimpse of the big picture, it is quite clear that the current policies of nations and their corporate entities are destructive, oppressive, and barriers to peace and justice. Such policies are making a select few rich beyond comprehension while the vast majority either barely survives or literally starves. This is our world’s hard and cold reality “ a reality that goes largely unchecked even among the educated masses of the developed world. Unfortunately, those same educated masses seem content to be brainwashed by a corporate-controlled media that tells them next to nothing about the world’s true condition. According to those who control information, people are on a need-to-know basis, and most of what is truly important the people simply do not need to know!

A worldwide epidemic

This is truly a worldwide epidemic, for it can be found in the third world as much as (if not more than) the developed world. It is a problem, however, that can be addressed only at its roots. While living in both the U.S. and Southeast Asia, I have learned that these problems all stem from the same place. The appearances (e.g., people, cultures, and religions) may be different, but ultimately everything that ails us has the same root causes, as mentioned in the Qur’an. Greed is greed, whether it is that of Enron or some other corrupt entity somewhere else. It may look different and the people may speak a different language, but the ailment is the same, because underlying it all are the same diseases of the heart. This is precisely why the Qur’an is for humanity “ because we have so many fundamentals in common with our fellow human beings.

All of us are capable of harboring some of these booby traps of the soul (e.g., greed, injustice, envy, and hatred). This is why we cannot point fingers at one nation, person, or corporation. The diseases of the heart are killers, and they are killing, starving, and oppressing millions of innocent people. Thus we have to deal with the sickness’ cause, not just its symptoms. More war and destruction may eliminate some of the culprits, but it certainly will not rid the world of the problem, which is, ultimately, sickened human hearts feeding on ignorance.

Globalization

We must be wise at such times and seek out wisdom, not just information as to how the world works. Globalization, which is actually just a fancy innocuous-sounding term for the westernization and materialization of the entire planet, is not in most people’s best interests. In fact, some less well-known world leaders have been brave enough to acknowledge this. Malaysian prime minister Dr. Mahathir Mohamed has consistently spoken out against the dangers of globalization in its current guise. He considers it to be nothing more than the developed nations leveraging its huge capital advantages in order to exploit developing and underdeveloped nations.

By lining the pockets of weak, corrupt government leaders, multinational corporations are free to wreak havoc on the people, economies, and lands of weaker nations. Dr. Mahathir has said that capital must be equalized first if the current form of globalization is to have a truly equalizing effect on all nations’ economies. Developing countries must be protected and their own economies nurtured until they can compete on an even playing field. However, this is far from the case today. Thus, globalization in its current form allows developed nations to strip developing nations of their resources while spreading a culture of consumerism and materialism through their huge multinational corporate media and advertising machines.

A Qur’anic perspective

To further understand greed from a Qur’anic perspective, we should understand why God banned usury: Those who devour usury will not stand, except as stands one whom the Evil One has driven to madness by his touch (2:275). When referring to this verse in his Tafsir al-Qur’an, Daryabi says: According to the socialist writers of today, money is lent by them who have abundance and returns to them to increase that abundance, the increase being the unpaid dues of labor, which is the only source of wealth “ the rich are thus made richer and the poor poorer, by every fresh act of taking interest, and the stability of social organism is disturbed. This analysis is perfectly consistent with the world economy today. Look around “ interest is everywhere, wealth is in the hands of a few, and the gap between rich and poor is growing ever wider. The result? The social organism is grossly disturbed.

This is why the Book is called Al-Qur’an al-Hakim (the wise Qur’an). It is a book full of wisdom. The evils of usury, greed, and their ugly companions are forces that have destroyed entire peoples throughout history. They are problems that humanity cannot shake, especially when we turn away from the Creator’s wisdom and guidance.

Our world’s current course, with the haves and the have nots growing apart at an exponential rate, cannot be sustained. Somewhere, somehow, and at some point there will be a monumental adjustment. A world economic system that is so unequal, so unjust, and so divisive cannot last for long. The powers-that-be currently controlling the world economy are deluded if they think that they can continue their corrupt policies while 95 percent of the world sits back and does nothing. Sooner or later, it will come to a crashing halt.

Islam provides a straightforward solution to this problem. Yet history has proven that until humanity can tackle the evil that lies within each person, we will never address the evils around us effectively. The solution is called fairness (justice) and cooperation. In our present capitalist-dominated world, such terms seem utopian. Unbridled competition is the name of the game and, moreover, there is no indication that this will change any time soon. Such over-competitiveness seeps into every aspect of life until entire societies distrust one another, become antisocial, and are completely dysfunctional from a social perspective. This is already the case in much of the western world.

Conclusion

Islam encourages people to come together, rely on one another, and commune. It already has the built-in, well-formulated systems to do it in an inclusive way one that is neither elitist nor harsh. Islam says that when people unite to build and do good works out of a desire to achieve goodness for all and His approval, they will earn His pleasure. When humanity is granted God’s succor, the sky is the limit in terms of what can be accomplished. The glorious history of Islamic civilization proves this.

This is how the Prophet erected the perfect society in seventh-century Madinah. In that society, people worked, lived, and worshipped together. Muslims, non-Muslims, and different peoples and tribes co-existed peacefully, all agreeing to live under one leader in a perfectly just system. That leader was a man who desired nothing for himself and only the best for his fellow believers and neighbors. Until those with envy and hatred in their hearts spoiled the peace, Madinah showed the world how belief in God, cooperation, and living for the common good are the keys to peaceful coexistence. This can never happen again until humanity is willing and able to fight the sicknesses lying deep within each person’s heart.

Footnotes

1. Steve Smith, World Billionaires Still Richer than Half of Humanity. Online at Islamonline.net, 2002.
2. Ibid., 2002
3. John Pilger, The Colder War, The Mirror 20 (30 January 2002).
4. Online at www.forbes.com.
5. Business Week (7 April 2000), 100.
6. Edward N. Wolff, Recent Trends in Wealth Ownership (paper for the Benefits and Mechanisms for Spreading Asset Ownership in the United States conference, New York University, December 10-12, 1998.)
7. Online at www.census.gov [Table H-2].
8. Stijn Claessens, Simeon Djankov, and Larry H. P. Lang, Who Controls East Asian Corporations? (Washington, DC: The World Bank, 1999).
9. Jeff Gates, Modern Fashion or Global Fascism, Tikkun: A Bi-Monthly Jewish Critique of Politics, Culture, and Society (Jan.-Feb. 2002).

Surely every person at some time looks up at the sun and moon and the brilliant stars and asks, who positioned all these so perfectly on the face of the sky’?

People have always marvelled at the stars and planets. But they have not always realized that there is a harmony in their positions and movements, a law and order, as indeed in the whole universe. For example, seen from the perspective of the ancient Greek astronomers, celestial bodies in the universe are aimless objects. That seems to be the implication of the term ‘planet’ which means ‘wandering’. The Greeks may have thought the ‘wandering stars’ or ‘planets’ moved in unstable orbits, more or less randomly.

The ancient astronomers’ judgement was not founded upon the Oneness of the Creator Who orders everything in the universe. Inevitably they did not have a clear grasp of the orderliness of the macro-cosmos and did not seek it.

The Qur’an revealed many centuries ago that it is Allah who created the heavenly bodies and put them into their peculiar orbits. There is nothing in the Islamic teachings that argues the view that phenomena or events are random.

Do they not look at the sky above them, how We have built it and adorned , and there are no flaws in it. (50.6)

We have built above you seven strong (heavens) and placed therein a blazing lamp. (78.12)

The ‘blazing lamp’ referred to is the sun.

People have always been fascinated by the thousands of gleaming lights sprinkled across the night sky. Today many enjoy looking into the heavens and learning about the patterns and positions of the stars, and discovering what stars can tell us about our universe as a whole. From our planet, if very high buildings and city lights permit, we can see about 6,000 stars with the naked eye. They change in colour, size, and brilliance.

We are near enough to one particular star, the sun, to find out many details about what these celestial bodies are made of and how they function. A star is composed of gases and other substances compressed together under the force of gravity. The pressure at the core of a forming star is sufficiently intense to initiate nuclear reactions that begin generating energy. During this process, matter is converted into energy, releasing large quantities of heat and light.

The sun may not catch up the moon, nor may the night outstrip the day. Each one is moving smoothly in its own orbit ( 36.40). Here an essential fact is clearly stated, namely the existence of the solar and lunar orbits. At the time of the Revelation, it was generally believed that the sun orbited a motionless earth. This, the geocentric system, had held sway from the early second century (the time of Ptolemy). It continued to do so until the sixteenth century. Fourteen centuries ago, the Qur’an directed the inhabitants of the Arabian Peninsula and, through them, all of mankind, towards the truth. The demonstration of the existence and details of the solar and lunar orbits is one of the recent achievements of modern astronomy.

Those who do not believe in One Creator maintain that everything comes about by chance. They do not realize that every creature in motion, from minute particles to the planets, displays on itself the stamp of the Eternal and of His Unity. Also, by reason of its movement, each of them, in some sense, takes possession of all the places in which it travels in the name of Unity, thus including them in the property of its Owner. As for those creatures not in motion, each of them, from plants to the fixed stars, is like a seal of Unity that shows the place in which it is situated to be the letter of its Maker. That is to say, each flower and fruit is a stamp and seal of unity that demonstrates, in the name of Unity, that its habitat and native place is the letter of its Maker. What all that inter-connectednes means is that one who does not have all the stars within his command does not have command over a single small particle either.

There are two other verses in the Qur’an about the sun and the moon and their usefulness to human beings, not only as light, but also as points of reference for space and time:

Allah subjected the night and the day for you, the sun and the moon. The stars are in subjection to His Command. Verily in this are signs for people who are wise. (16.12)

Allah is the One Who made the sun a lamp and the moon a light and ordained for it mansions, so that you might know the number of years and the reckoning (of the time).

Allah created this in truth. He explains the signs in detail for people who know (10.5)

The solar system comprises the sun and the nine planets that orbit it. The closest to the sun is the planet Mercury, at an average distance of 58 million km; the farthest, Pluto, is 5,900 million km from the sun. The closer a planet is to the sun, the shorter the time taken to complete its orbit. Thus, Mercury takes only 88 earth days to go round it, while Pluto orbits the sun only once in 248 earth years. Absolute time and distance are nowadays both measured in terms of light speed–a metre, for example, can be defined as the distance the light travels in a certain ‘space’ of time, in fact, 0.000000003335640952 seconds.

It is hard to think of the sun as a passing event. Nevertheless, its ‘term’ is fixed–the Qur’an is explicit on this point: And the sun runs its course for a period fixed for it (36.38). So, how long has the sun left to run? Astronomers nowadays calculate about 4.5 billion more years in its present state. It will still have nearly the same surface temperature (6.000 °C) and yellowish colour that it has now but it will appear about twice as bright because it will be about 60 percent bigger. Its next 4.5 billion years will have begun to take their toll on the sun’s nuclear fuel supply. What then? We don’t really know. Any calculations we make can only be made on the basis of theory.

The sun is full of gases composed of two thousand trillion tons (2×103 kg) of matter,

with the remains of other elements. For every million atoms of hydrogen there are about 85,000 helium atoms and only about 1,000 of any other kind. Pressure from all that mass compressing into the centre of the sun is high enough for the hydrogen atoms to fuse in the core to form helium. This simultaneously creates new energy which keeps the sun from collapsing further and provides the energy that allows it to (or makes it) shine. A series of nuclear fusion reactions, whose end result is the conversion of hydrogen to helium, happen on a vast scale and release very great amounts of energy in the form of heat, light, X-rays and so on. A part of this reaction must be the release of so-called neutrinos. Neutrinos are particles that interact so little with other matter that they can probably float through entire galaxies without being affected. They exist but have no mass nor any other physical property, which is like saying that they simultaneously exist and do not exist: we know they must be around by the way the movement of other (‘real’) particles is affected. If the theory about the way that the sun shines is correct, the sun should be producing about 180×1036 neutrinos each second. Obviously, only a small portion of these neutrinos will come in the earth’s direction.

The sun generates magnetic fields deep in its interior. Through mechanisms not yet fully understood, some of these fields erupt periodically through the sun’s surface, the photosphere. The high temperature and structure of the corona are produced by energy pumped from the photosphere up into the outer layer of the sun’s atmosphere along these magnetic fields.

The sun has been fusing hydrogen into helium throughout its present lifetime of 4.5 billion years, using up less than half of the available hydrogen in its core. By another 4.5 billion years, 90 percent of the available hydrogen in the core will have been converted into helium. Serious questions about the fusion rate in the sun still remain, but according to one theory, the humans of the future will face a sun that is running out of core hydrogen.

When that happens, the gas temperature and pressure will drop and the interior of the sun will collapse under the weight of the surrounding mass. The pressure in the collapsing gas will build up sufficiently for a rind of hydrogen to start burning around the core, now helium. This fusion will provide an outward force on the outermost layers of the sun, pushing them farther out than they are now. The surface of the sun will expand outward until it reaches the orbit of Venus.

Finally, this hydrogen outside the core will run out. The core of the sun will continue to contract, trying to replace the heat no longer generated by hydrogen burning. When the internal temperatures reach 100 million Kelvins, the helium (generated by the hydrogen burning) will itself start to burn. This will happen quickly, forming a carbon-rich core. Around this burned-out core, helium burning will start, and then the rind of hydrogen also will start to burn. The vast energy released by both rinds will push the sun’s outer layers further out until they reach the orbit of Jupiter. Earth will then be ‘inside’ the sun. The temperature on the surface of earth, around 6.5 billion years from now, will be around 30,000 Kelvins, and everything organic will be burned to a crisp.

Intelligent beings on earth 5 or 6 billion years from now, if any, would face the pressure to leave earth and, indeed, the solar system. They would need to have colonized planets around younger (therefore more stable) stars in order to survive. It is likely that humans in the near future will move off the earth in search of mineralogical and economic gain, whereas the future beings of our speculation will move off in order to save the species. The ageing sun will give future life a focus and a goal. And then, if we may be permitted to use the expression, a sort of Doomsday will have happened: certainly, the sun will have run to the end of its appointed (muslaqarr) time.

SOURCES

• ASIMOV, I. (1993) Explorig the Earth and the Cosmos, Allen Lane.
• Astronomy January 1992: March 1993.
• BUCAILLE,M.(1987) TheBible, The Qur’an and Science. Taj Company, Delhi.
• GRIBBIN, M. & Gribbin J. (1992) Too Hot to Handle? Corgi, UK.
• JONES, B. (1991) Planets, Brian Trodd Publishing House Ltd.
• JONES, B. (1992) The Night Sky, Salamander Books Ltd.
• MATTHEWS, R. (1993) The Mind of God, Virgin Books.
• NURSI, S. (1987) The Thirty-Second Word from the Risale-Nur Collection.
• NURBAKI, H. (1989) Verses from the Glorious Qur’an and the Facts of Science T.D.V.. Ankara