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Bob_Sconce t1_jbcds33 wrote

Reply to comment by bimundial in James Webb Telescope captures the same galaxy at three different points in time in a single mind-boggling image by mirzavadoodulbaig

? The surface doesn't have a center, but the balloon does. If all the mass was on the balloon surface, then there is a point inside the balloon that is, effectively, the center of mass of all that mass. That's X. And, presumably, not ALL of the mass expanded outward, otherwise there would be a massive empty space in the middle of the universe. (As far as I know, that hasn't been discovered.)

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bimundial t1_jbchal1 wrote

But the universe IS the surface. In this example, there is no inside. For an object placed upon the baloon, all that he sees is everything getting further apart, and that's how the universe behaves.

The universe was smaller, than it got bigger. It got bigger everywhere, in all directions, at the same rate. There is no 'X' direction where things got pushed out of, everything just got more distant from everything else.

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Bob_Sconce t1_jbd1wp7 wrote

So, things got more distant from each other at a rate that was faster than the speed of light?

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twistier t1_jbd3w5k wrote

The expansion of space does not have the speed limit that traveling through space has.

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bimundial t1_jbdvkmc wrote

Yep. That's because the things weren't getting distant inside space-time, but space-time itself was expanding between things. Relativity only puts a cap on the speed things move inside time-space, not the rate that time-space itself grows

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