Re: Dark Energy does not add any extra "space" to Space in a galaxy.
LNA asks again:
essentially whether or not we have actual evidence for expansion of space at the galaxy level ( and lower).
Even one galaxy is too small for our sensors to measure this today. And even a local groups of galaxies, with their bobbing and weaving around, are too small. M31 in Andromeda is on a collision course with our Milky Way and the magnitude of that swamps out any space expansion. You need to go way further out.