Wait akshually I’ve never understood that

How come the universe expands radially in all directions when everything started at a single point and gravity exists?

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conservation of energy

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also gravity is a very weak force

extremely weak, in fact

Well it’s proportional to mass right?

gravity is so weak that your legs can overcome the force of the entire earth's gravity

Well but thats because it’s just the earth

What about the gravitational pull of all the mass in the universe?

the electromagnetic and nuclear forces are much stronger than gravity

Fair

also everything was given an initial momentum outward when the big bang happened

the universe should slow down because of gravity, though

but apparently the expansion is accelerating

still a great mystery

Hmm

Well that does make sense

as to why we perceive this

Where did that momentum come from to begin with though?

no one knows

probably no one will ever know

since it precedes any notion of time and space

I mean the principle of causality is the ultimate grounding of my belief in God

But sometimes that just feels like a cop-out

I sort of beleive that momentum was from the big explosion since in theory it is still expanding.

And so, everything is still moving outward.

yes the big bang was basically a big explosion and the momentum for that is conserved

Tbh tho, I beleive in the big crunch more

the thing about the expansion of the universe, though, is not that the objects in it are moving faster, but that space itself is expanding

Which is similar to the big bang, just that it is constantly repeating

so, let's say the universe consisted of only two particles and no gravity, and the two particles were stationary

in 1 billion years you'd measure them as being further apart even though they didn't move

because the space expanded

Ye

pretty weird

Space is weird

you can actually measure that space is not "flat" in space with lasers and things that are very far away

In general

I have seen an interesting theory that time and space are not fundamental but are emergent and that information is fundamental