this post was submitted on 13 Mar 2025
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[–] [email protected] 8 points 1 day ago (2 children)

I was under the impression that gravity was a constant force keeping the atoms closer together

[–] [email protected] 11 points 1 day ago (1 children)

More importantly it's the electromagnetic force that keeps atoms together. Gravity only keeps planets and stars together and also solar systems and galaxies, but in ordinary objects it's totally negligible.

[–] [email protected] 3 points 1 day ago

"Weaker than Weak".

[–] [email protected] 3 points 1 day ago (2 children)

Space itself is constantly expanding. Theories of the Big Rip predict the space between atomic particles could become vast enough to rip them apart.

[–] [email protected] 2 points 23 hours ago

The big rip scenario happens in the case where the rate of space expansion is increasing. It's possible, but we haven't seen any evidence of it yet, so far the rate appears constant, which means a heat death scenario.

[–] [email protected] 4 points 1 day ago* (last edited 1 day ago)

The big rip concept comes into play when the expansion rate starts to become faster than the forces holding molecules and atoms together. As far as current cosmic expansion goes, it only applies to space between galaxies. The current expansion rate is so weak it's not enough to overcome forces that hold galaxies together.