Creation of the Universe - the Theory and Evidence..

The creation of the Universe

A theory that dominates the scientific community is big bang theory.

The Big Bang theory is the most acceptable theory today about the creation of the universe. According to this theory the universe was created in a big bang about 12-15 billion years ago. Science has no way to predict what was before that time. Before the big bang all matter in the universe as we know it today was close to one point. It's hard to imagine, but the universe was that point, there was nothing else than this. Then a big explosion took place and the point began to expand with tremendous speed. All the material init moved away from the explosion into space. The explosion also created a lot of radiation. Evidence of this is the cosmic background radiation that we see it today. Since then, this point was the early universe has been expanded to the size we know today, and continues to expand. The evidence for this is the measurement of galaxies seems to get further apart as we measure it today.

Immediately after the big bang the universe was filled with a thick "soup" of subatomic particles called quarks and leptons (like electrons) and their antiparticle equivalents. At 0.01 seconds after the big bang some quarks had united to form neutrons and protons. After another 2 seconds only leptons remaining were electrons, the antiparticles had been destroyed. After 3.5 minutes of hydrogen and helium nuclei were formed. After one million years the universe was populated with hydrogen and helium atoms, the raw material, stars and galaxies. The original radiation from the big bang has grown less vigorously. This "cosmic background radiation" today has a temperature equal to 3 degrees above absolute zero, which is about -270 C.

The future of the universe have multiple possible outcomes.

Either it becomes a closed universe where the universe will encounter a critical point was the gravity between galaxies would overcome the speed given to them from the big bang and the universe will begin to shrink. All galaxies will move to a certain point in space where they will be a highly concentrated point like the universe was like before the big bang. This tragic death of the universe was named by some researchers as "The Big Crunch". So the process can start over creating a new universe (it can also happened before our present universe).

Or it will be a flat universe where the universe will continue the expansion, but growth will decline almost zero, but never below it.

Or it will be an open universe where the universe will continue expanding forever.

As one of these options will be the fate of our universe is up for discussion in the scientific community today, and no agreement is reached, but we are still expanding phase.