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I think we're kind of saying the same thing.

Imagine a ball on a trampoline. Gravity is the bend in the trampoline's surface. Expansion would be making the trampoline itself bigger by stretching it out.

Antigravity would be taking the bend out of the trampoline's surface. But that isn't what expansion does.

I think that's an important distinction, because if the expansion is isotropic along the entire surface of the trampoline, the gravity well could get deeper or wider - which isn't antigravity. It's just gravity.

Expansion might look like antigravity at cosmic scales - where spacetime is flat, but on local scales were spacetime is curved isn't antigravity at all.

[QUOTE="marduk, post: 268492, member: 989"] I think we're kind of saying the same thing. Imagine a ball on a trampoline. Gravity is the bend in the trampoline's surface. Expansion would be making the trampoline itself bigger by stretching it out. Antigravity would be taking the bend out of the trampoline's surface. But that isn't what expansion does. I think that's an important distinction, because if the expansion is isotropic along the entire surface of the trampoline, the gravity well could get deeper or wider - which isn't antigravity. It's just gravity. Expansion might look like antigravity at cosmic scales - where spacetime is flat, but on local scales were spacetime is curved isn't antigravity at all. [/QUOTE]

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