Boss
Take a Memo:
Some matter may have an end but ultimately whatever happens to this earth and the stars and the comets and meteors will just be recycled into the next universe that comes along or doesn't come along, in another bazillion katrillion years. Next question?
Please explain how this can happen with a universe that is not only expanding but accelerating? Every second of time that passes, every atom in the universe gets further apart and does it faster than the second before. Now... You've heard of Newton's Laws of Motion, I assume? So how is it, all these atoms suddenly stop doing what they've been doing forever, and a reverse process happens? According to Newton, the ONLY way such a thing could ever happen, is if a stronger force acted upon the atoms of the universe. Hmm.... what is more powerful than the universe?
Let me catch you up to date on science here... Back about 90 years ago, scientists held a theory that the universe may be cyclical. That matter compressed tightly, creating friction and the energy caused an explosion (the big bang). Then all the matter burst out into the universe in this explosion, eventually stopped expanding and the forces of gravity drew it all back together again into a singularity. Rinse and repeat.
However.... and this is very important. The more science studied the universe, the more they realized the universe is not behaving as if the expansion was from an explosion. You see, when something explodes, the velocity of matter is greatest at the time of explosion and gradually diminishes over time. Eventually, friction acts upon the matter and velocity reaches a zero point. (See Newton's Laws of Motion) But the velocity of the universe expansion is increasing, not diminishing. Therefore, it is not possible for the universe to "reverse course" and contract back in on itself, unless some other unknown force acts upon the universe to cause this. We find no evidence of any such force. Black holes are not that force, if anything, they are working against any such contraction of matter, sucking up massive portions of the universe. Gravity is not that force because gravity is constant, it would be working on the universe at present to slow the velocity and it's not.
So you are left with an outdated theory that has no relevant basis in physics. Still, you've heard someone state this theory and it sounded good to you at the time, so you're here repeating it as if you are smart.