Is there a name for the type of momentum that leads to the expansion of the universe? Or is that just the total thermal energy that will become entropy at some point?
“Dark energy” or “cosmological constant” is what “pushes” the universe to expand. Not angular momentum, which is, according to our understanding is zero. By the way, it is the space itself that expands. There is no any “expansion force” that acts on stars.
The universe does not revolve around us, it expands around us.
Except in the case of yo mamma where she is the one that expands space around her (with a mass that huge & 99% of it being dork energy & dank matter it causes further acceleration of expansion in the local cluster).
Except we could apply this reasoning to things that actually matter and are valuable to us. Things we do and care about might not matter at the scale of the galaxy we are in but they can still matter to us.