The Expansion of the Universe and the Big Bang

In the 20th century, great strides were made in the field of astronomy. First, the Russian physicist Alexandre Friedmann discovered in 1922 that the universe did not have a static structure. Starting out from Einstein's theory of relativity, Friedmann calculated that even a tiny impulse might cause the universe to expand or contract. Georges Lemaître, one of the most famous astronomers of Belgium, was the first to recognise the importance of this calculation. These calculations led him to conclude that the universe had a beginning and that it was continuously expanding right from the outset. There was another very important point Lemaître raised: according to him, there should be a radiation surplus left over from the big bang and this could be traced. Lemaître was confident that his explanations were true although they initially did not find much support in the scientific community. Meanwhile, further evidence that the universe was expanding began to pile up. At that time, observing a number of stars through his huge telescope, the American astronomer Edwin Hubble discovered that the stars emitted a red shifted light depending on their distances. With this discovery, which he made at the California Mount Wilson Observatory, Hubble challenged all scientists who put forward and defended the steady state theory, and shook the very basis of the model of the universe held until then.

Georges Lemaître

Hubble's findings depended on the physical rule that the spectra of light beams travelling towards the point of observation tend towards violet while the spectra of light beams moving away from the point of observation tend towards red. This showed that the celestial bodies observed from the Californian Mount Wilson Observatory were moving away from the earth. Further observation revealed that the stars and galaxies weren't just racing away from us; they were racing away from each other as well. This movement of celestial bodies proved once more that the universe is expanding. In Stephen Hawking's Universe, David Filkin relates an interesting point about these developments:

The analysis of the light of the two stars of Alpha Centauri over a period of time showed a series of changes in their spectra. The way the red and blue shifts vary revealed a picture of two stars completing orbits around each other once every 80 years.

Edwin Hubble

…Within two years, Lemaître heard the news he had scarcely dared hope for. Hubble had observed that the light from galaxies was red shifted, and, according to Doppler effect, this had to mean the universe was expanding. Now it was only a matter of time. Einstein was interested in Hubble's work anyway and resolved to visit him at the Mount Wilson Observatory. Lemaître arranged to give a lecture at the California Institute of Technology at the same time, and managed to corner Einstein and Hubble together. He argued his "primeval atom" theory carefully, step by step, suggesting that the whole universe had been created "on a day which had no yesterday." Painstakingly he worked through all the mathematics. When he had finished he could not believe his ears. Einstein stood up and announced that what he had just heard was "the most beautiful and satisfying interpretation I have listened to" and went on to confess that creating the "cosmological constant" was "the biggest blunder" of his life. 1

Albert Einstein, during a visit to the Wilson Observatory, where Edwin Hubble made his observations.

The truth that made Einstein, who is considered one of the most important scientists in history, jump to his feet was the fact that the universe has a beginning.

According to the Doppler effect, if a galaxy stays at a constant distance from the earth, the spectra of light waves will appear in the "standard" position (top). If the galaxy is moving away from us, the waves will seem stretched and red shifted (middle). If the galaxy is moving towards us, the waves will seem squashed up and blue shifted (bottom).

Further observations on the expansion of the universe gave way to new arguments. Starting from this point, scientists ended up with a model of a universe that became smaller as one went back in time, eventually contracting and converging at a single point, as Lemaître had argued. The conclusion to be derived from this model is that at some point in time, all matter in the universe was crushed together in a single point-mass that had "zero volume" because of its immense gravitational force. Our universe came into being as the result of the explosion of this point-mass that had zero volume and this explosion has come to be called the "Big Bang".

The Big Bang pointed to another matter. To say that something has zero volume is tantamount to saying that it is "nothing". The whole universe is created from this "nothing". Furthermore, this universe has a beginning, contrary to the view of materialism, which holds that "the universe has existed from eternity".

Big Bang with Evidence

Once the fact that the universe started to form after a great explosion was established, astrophysicists gave a further boost to their researches. According to George Gamow, if the universe was formed in a sudden, cataclysmic explosion, there ought to be a definite amount of radiation left over from that explosion which should be uniform throughout the universe.

In the years following this hypothesis, scientific findings followed one another, all confirming the Big Bang. In 1965, two researchers by the name of Arno Penzias and Robert Wilson chanced upon a form of radiation hitherto unnoticed. Called "cosmic background radiation", it was unlike anything coming from anywhere else in the universe for it was extraordinarily uniform. It was neither localised nor did it have a definite source; instead, it was distributed equally everywhere. It was soon realised that this radiation is the relic of the Big Bang, still reverberating since the first moments of that great explosion. Gamow had been spot-on, for the frequency of the radiation was nearly the same value that scientists had predicted. Penzias and Wilson were awarded the Nobel Prize for their discovery.

The gigantic horn antenna at Bell Laboratories where Arno Penzias and Robert Wilson discovered the cosmic background radiation. Penzias and Wilson were awarded the Nobel Prize for this discovery in 1978.

It took only eight minutes for George Smoot and his NASA team to confirm the levels of radiation reported by Penzias and Wilson, thanks to the COBE space satellite. The sensitive sensors on board the satellite earned a new victory for the Big Bang theory. The sensors verified the existence of the hot, dense form remaining from the first moments of the Big Bang. COBE captured evidentiary remnants of the Big Bang, and the scientific community was compelled to acknowledge it.

Other evidence had to do with the relative amounts of hydrogen and helium in the universe. Calculations revealed that the proportion of hydrogen-helium gasses in the universe is in accord with theoretical calculations of what should remain after the Big Bang.

The discovery of compelling evidence caused the Big Bang theory to gain the complete approval of the scientific world. In an article in its October 1994 issue, Scientific American noted that "the Big Bang model was the only acknowledged model of the 20th century"
Confessions were forthcoming one by one from the names who had defended the "infinite universe" concept for years. Defending the steady-state theory alongside Fred Hoyle for years, Dennis Sciama described the final position they had reached after all the evidence for the Big Bang theory was revealed:

There was at that time a somewhat acrimonious debate between some of the proponents of the steady state theory and observers who were testing it and, I think, hoping to disprove it. I played a very minor part at that time because I was a supporter of the steady state theory, not in the sense that I believed that it had to be true, but in that I found it so attractive I wanted it to be true. When hostile observational evidence became to come in, Fred Hoyle took a leading part in trying to counter this evidence, and I played a small part at the side, also making suggestions as to how the hostile evidence could be answered. But as that evidence piled up, it became more and more evident that the game was up, and that one had to abandon the steady state theory.2

The launch of the COBE satellite further substantiated that the universe was formed as a result of a big explosion.

Allah Created the Universe from Nothing

With ample evidence discovered by science, the thesis of an "infinite universe" was tossed onto the scrap-heap of the history of scientific ideas. Yet, more important questions were forthcoming: what existed before the Big Bang? What force could have caused the great explosion that resulted in a universe that did not exist before?

There is a single answer to be given to the question of what existed before the Big Bang: Allah, the All-powerful and the Almighty, Who created the earth and the heavens in great order. Many scientists, be they believers or not, are obliged to admit this truth. Although they may decline to admit this fact on scientific platforms, their confessions in between the lines give them away. A renowned philosopher Anthony Flew says:

Notoriously, confession is good for the soul. I will therefore begin by confessing that the Stratonician atheist has to be embarrassed by the contemporary cosmological consensus. For it seems that the cosmologists are providing a scientific proof of what St. Thomas contended could not be proved philosophically; namely, that the universe had a beginning. So long as the universe can be comfortably thought of as being not only without end but also beginning, it remains easy to urge that its brute existence, and whatever are found to be its most fundamental features, should be accepted as the explanatory ultimates. 3

Some scientists like the British materialist physicist H. P. Lipson confess that they have to accept the Big Bang theory whether they want it or not:

If living matter is not, then, caused by the interplay of atoms, natural forces, and radiation, how has it come into being?. I think, however, that we must.admit that the only acceptable explanation is creation. I know that this is anathema to physicists, as indeed it is to me, but we must not reject that we do not like if the experimental evidence supports it.4

In conclusion, science points to a single reality whether materialist scientists like it or not. Matter and time have been created by a Creator, Who is All-Powerful and Who created the heavens, the earth and all that is in between:Almighty Allah.

It is Allah who created the seven heavens and of the earth the same number, the Command descending down through all of them, so that you might know that Allah has power over all things and that Allah encompasses all things in His knowledge. (Surat at-Talaq:12)