I had the same thought.
Comment on billions and billions.
ech@lemm.ee 8 months ago
IANAP, but as I understand it, local clusters will remain close together due to the stronger forces of attraction they have on each other. As these clusters constitute several galaxies, I assume groupings of atoms would also stick together.
Einstein@sh.itjust.works 8 months ago
rockerface@lemm.ee 8 months ago
Yep, there’s a sweet spot where gravity overtakes the expansion due to inverse square law. And of course, atoms and molecules are held together with forces that are stronger than gravity - at those distances, at least