I don't understand how the universe can be more than 28 billion light years across
If matter can't travel beyond the speed of light, and the big bang happened 14 billion years ago, then the furthest that matter can have traveled in that time is just under 14 billion light years in all directions. Unless there were lots of big bangs that took place simultaneously all over the place.
(, Wed 7 Jul 2010, 14:11, Reply)
Ahh, but the big bang happened at the centre..
so it's 14 billion light years in all directions ;)
(
The Legendary Pink Dot survived yet another, Wed 7 Jul 2010, 17:44,
Reply)