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Do cosmologists know for sure that the Big Bang is propelling all matter away? (lemm.ee)

submitted 1 year ago* (last edited 1 year ago) by aCosmicWave@lemm.ee to c/asklemmy@lemmy.ml

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Is it at all possible that instead of being pushed away, we are instead getting pulled toward something huuuuuge via gravity? As if we are falling into something way greater than ourselves? I thought this was a wild idea but after I Googled it I found out that there is such a thing as a “Great Attractor”. Something 150 million light-years away is literally pulling all nearby galaxies towards it but no one knows exactly what it is.

So how do we know there aren’t any other Great Attractors, Greater Attractors, ad infinitum?

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[–] ComradeKhoumrag@infosec.pub 3 points 1 year ago

When you look far away, you're looking backwards in time. If you look really far away, you look really far back in time. If you look far enough away, you'll see the big bang.

If you move a thousand light years to your left and do this again, you still see the big bang. Even though your "center" has changed. The big bang is more like a singularity in time than it is in space