Do you believe in the big bang theory?

Well if your wondering what's the big bang? It is what some scientists and me believe is how the universe began. Well the big bang is where all the matter and things are all jammed into one big thing and since kept crushing in on itself until it exploded into the thing we call the universe. But the bad side is that we think that the process is going to happen again :C. So if you aren't in any religion this is a scientific version of how life began.

Do you think this is true?