Damn this came out in ASP1010 paper for the last question. They asked us a question regarding why the theory of the Big Bang was suggested.
I went on about CMBR and inflation, tracing back to a singularity.
unless i am missing a key element of the theory, that means something was created from absolute nothingness. Also, we do not know what happened before the singularity, we could be just one cycle of a continually expanding and collapsing universe.
I spoke to a lecturer regarding a topic similar to this. According to him, since the rate of expansion for the universe increases as we look back in time, there would be a point(~16b ly's) where the expansion of the universe equals the speed of light. He called this the cosmic event horizon. Apparently, whatever can happen after that point, we do not know what happens after that point.
But as far as it's within the cosmic event horizon, we can safely assume that we're in an open universe(I hope). We have solid evidence(redshift) that the universe is expanding, but we had yet to prove that it may collapse one day.