how is empty space expanding?

what's the best guess as to why space is expanding? Dark energy is just other dimensions "pushing" on us. String theory says there must be 11 dimensions for the math to work.

Originally posted by ogb
what's the best guess as to why space is expanding? Dark energy is just other dimensions "pushing" on us. String theory says there must be 11 dimensions for the math to work.

Originally posted by FreakyKBH
Momentum.

Originally posted by humy
momentum = mass * velocity

Empty space has neither mass (the trivial virtual particles count for nothing here) nor velocity thus no momentum.
You are taking complete gibberish yet again.

Originally posted by FreakyKBH
Momentum.

Originally posted by ogb
what's the best guess as to why space is expanding?

Originally posted by twhitehead
If it didn't expand there would be no universe.

Originally posted by humy
I personally don't have the necessary expert knowledge to even come close to adequately answering what I assume was his intended meaning of his question.

Originally posted by humy
That explains 'how we know' but somehow I don't think that was the kind of "why" he meant.
I personally don't have the necessary expert knowledge to even come close to adequately answering what I assume was his intended meaning of his question.

Originally posted by FreakyKBH
Not only that, it explains the how of how it's happening.

Guess it isn't gibberish after all, huh.

Originally posted by KazetNagorra
Can you be more specific as to how "momentum" describes the expansion of space?

Originally posted by FreakyKBH
In my mind, I envision creation as the drop of the stone into a pond, with the effect of rippling outward.
I believe what we "see" are the reverberations of that splash, somewhat akin to the diminishing vibrations of a cymbal crash.

Originally posted by KazetNagorra
Do you know what momentum is?

Originally posted by KazetNagorra
Do you know what momentum is?

Originally posted by FreakyKBH
Do you understand English?