In 1965 a type of radiation called the "Cosmic Background...

In 1965 a type of radiation called the "Cosmic Background Radiation" was discovered (also called the microwave background radiation) by Arno Penzias and Robert Wilson. All regions of the sky send the same amount of this radiation to the earth. This was the breakthrough for the big bang theory. Long before 1965, scientists had predicted that we should be able to find energy remaining from the Big Bang.

They had now factually confirmed the faint remnant of the energy produced during the explosive birth of the universe. This radiation has a temperature of 3K (therefore it is also called 3K radiation) and it is very close to the value predicted by scientists before it was discovered. This radiation is much different to the radiation coming from a particular portion of the universe since it cannot be increased or decreased by pointing an antenna and is uniform from all locations to the earth.

In 1948, the "steady state theory" was advanced which now has fallen out of favor and which was completely knocked out by the above discovery of 3K radiation. Scientists today accept the Big Bang theory as being the most reliable with the most evidence to back it up. However, they do not know what CAUSED the big bang. The standard big bang theory does not explain what caused the big bang. Thus, scientists face a reality. Without God, the Big Bang is an impossibility.

"Do not the unbelievers see that the skies and the earth were one unit (joined together), then we split them apart..." Koran 21:30 To clarify some terms: If it is said that the universe is OPEN, it means it will expand forever. If it is said that it is closed, it will not expand forever. Whether a universe will expand, depends on if its average density is less than or equal to its critical density.

Our universe at present according to estimates has less than 20% of the density of matter to stop it from expanding. Essentially, it will continue to expand. The universe is not beginning-less. It was "born" out of the big bang and had a beginning. Some people maintain the unscientific idea that the universe is beginning-less like the steady-state theory. This has been proven wrong according to the Second Law of Thermodynamics.

In a closed system (by closed here we mean one which does not take energy from the outside- this is different to the closed definition given above), entropy (a measure of the degree to which a systems energy is unavailable to perform useful work) increases with time.