Well said Biswa..Actually I was also hoping this thread will take a twist in the right direction of cosmology,science and spiced with info from religious text cos I feel its all inter related. I also have often wondered if in the next Mahapralaya is it the same Earth we will be in or some other universe and some other planet which will play the role of Earth again. I was reading about Varaha Avatar yesterday and I was wondering where could Earth have been submerged for Lord Vishnu to pick it up again. What was the waters they were referring too in the Puranas? Its every interesting to try to wonder what could have been like before(even though I know I might not actually really know but no harm trying to decipher)