Big Bang.

In physical cosmo logy the big bang is the scientifixc theiory that the universe immerged from a tremendously dense and hot state abt 13.7 billion yrs agi. the theory is based on the observation indicating the expansion of space in accord with the Robertson walker model of general reltivity, as indicated by the hubble redshift or distant galaxies taken togather with the cosmological principle. Extrapolated into the past, the observaions show that the ubiverse has expanded before this, although general relativity predict a gravitational singularity.

The Big Bang theory is about a huge black hole who had sucked the whole of a previous Universe. Black holes compress everything they absorb into something small with a huge mass density. It comes to a stage that the compression is so hard that it explodes and everything is released out of the black hole. When it is released under a massive explosion... the matter travels at great speed and there is no air resistance to slow it down. As it is... our Universe is still expanding as that matter is still travelling from the original explosion. But it will come a time when it will stop travelling. When it does... the black hole which is still there... will start sucking our Universe back into the hole. And once it has... it will blow up again into a new Universe. Of course... this will take more time in years that any human cannot even imagine.

hmmmm..Big Bang is what have been happend very early in universe.this is a incident to start the universal system.Theory continue to grow and not to stop.So i think second is not possible untill first is over.

big band was caused due to internal instability of a huge ball of concentrated mass. its very unlikely that another big bang will occur. we dont have such huge amount of concentrated mass in universe any more.