Question

What is the Big Crush?

What is the Big Crush, when will it happen, how will it happen, any other information you have?

Answer 1

The reverse of the Big Bang.

Explanation:

I think you are referring to the Big Crunch.

One theory of the future of the universe is that it will eventually stop expanding and collapse under its own gravity into one big singularity.

This now looks unlikely in that the expansion of the universe seems to be accelerating.

So it looks more likely that the universe will continue to expand, ending in heat death in about `10^103` years.

Answer 2

The Big Crush is a theory that the present universe will reverse and turn back into a singularity that will result in another Big Bang.

Explanation:

The Big Crush is the opposite of the Big Bang. It is a theory that matter and energy are eternal and will recycle in an endless series of expansion and contraction.
Before Hubble's discovery of the Red Shift most scientists believed in a static universe that had and would exist forever. This allowed for the development of the "scientific philosophy" of material realism. Scientists came to believe that matter, energy and natural causes were all that existed or could exist.

Hubble's discovery of the red shift destroyed the concept of a static universe. In place of the static universe the empirical evidence led to the belief in a beginning of the universe called the Big Bang. Some theorists proposed the idea of a steady state universe somehow creating new energy and matter to replace the loss of matter and useable energy observed and predicted by an expanding universe. The empirical evidence would not support the steady state universe theories.

To maintain belief in eternal self existent matter and energy the theory of the Big Crush was developed. The idea that matter and energy endlessly recycled in periods of expansion (Big Bang) and contraction ( Big Crush) allowed for matter and energy to be eternal and all that exists.

In 1997 and 1998 studies of the supernovas gave empirical evidence that the Big Crush will not happen. The rate of the expansion of the universe is increasing not decreasing as predicted by the Big Crush theories. The proponents of the "scientific philosophy" of material realism are still struggling to come up with another explanation of the empirical evidence that matter is not eternal.