(July 15, 2015 at 1:13 pm)Catholic_Lady Wrote: Fantastic! Difficult to even imagine anything being that big...Indeed... difficult is the right word.
Awe-inspiring also comes to mind!
Or, speaking of mind, mind-boggling!
(July 15, 2015 at 1:13 pm)Catholic_Lady Wrote: Do you think the universe is infinite, or do you think it has boundaries?
Considering it's expanding, a few of the distances between galaxies, and backtracking it all to when what is visible was in a tiny point... I'd say we see most of what's out there...
There may be more stuff out there that we can't see... the possibility there is so much of it to become infinite, seems improbable.
According to Krauss, the overall sum of energy in the universe is Zero (and remember that energy = mass times a constant, energy = mass), so we can't have infinite stuff... some finite mass, and finite dark matter and dark energy, and it all adds up to zilch - pretty much what there was before anything happened - physicists like it when energy is conserved.