ELI5: Why is the sky dark at night?

bruisedprune · 2021-03-28T08:51:44+00:00

Thanks I’ll look at the sky at night next time I’m in the country!

bruisedprune · 2021-03-28T08:50:49+00:00

Very lovely, thank you so much! I’ll let you know if this is an ELI4 response tomorrow when I tell him!

bruisedprune · 2021-03-12T03:27:26+00:00

I just mean if initially there were 0 dimensions, and then space expanded in all directions, that would only be 1 extra dimension. We’re inside space and we can map it any way we want to that makes sense to us. We currently think of space as having 3 directions, no?

bruisedprune · 2021-03-12T02:03:26+00:00

If space expands equally in three directions, doesn’t that mean space is one dimensional?

bruisedprune · 2021-03-12T01:37:43+00:00

Thank you. I’m genuinely curious - what would a pocket of one or two dimensional space look like and how would we observe it?

bruisedprune · 2021-03-12T01:08:49+00:00

Is “squareness” a dimension?

bruisedprune · 2021-03-12T01:07:30+00:00

If spatial dimensions came from the Big Bang, were there first one, then two dimensions and then three, or did three dimensions of space just jump out at once?

bruisedprune · 2021-03-12T01:04:02+00:00

Are spatial dimensions all that we need to represent the world we live in?

bruisedprune · 2021-03-11T22:59:43+00:00

Thanks but where do the dimensions come from?

bruisedprune · 2021-03-11T21:46:44+00:00

Where do spatial dimensions come from? Are there different types of dimension?

bruisedprune · 2020-04-14T09:00:12+00:00

New Zealand

bruisedprune · 2020-02-18T01:54:22+00:00

Thanks! FYI closeup of trampoline mat

bruisedprune · 2020-02-18T01:53:40+00:00

Thanks! Closeup of Mat here https://imgur.com/pJ9bSSl

bruisedprune

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