"Where did that speck come from that went `` bang `` and out of it comes everything we see ?"
"The observable universe represents an event horizon , outside of which we can not see . The actual extent of the universe beyond that is at present unknowable . Current versions of M-theory hold that our universe was formed from the collisions of branes in a higher dimension ."
"Where did that speck come from that went `` bang `` and out of it comes everything we see ?"
"The observable universe represents an event horizon , outside of which we can not see . The actual extent of the universe beyond that is at present"