Recent content by n4nova

as far as i know... this expansion of the universe is the result of the big bang explosion.at the beginning , the the explosion occurred & the universe started to xpand from the zero state(ie.infinitely large density n infinitely small volume).till now the universe is xpanding & now the xpansion...

black hole... hello everyone... though i am a student of information technology i love astronomy very much.i have a question for all of u. that is..." does black holes really emit nothing...does really everything going inside a black hole can't come outside of it??"...