What causes the galaxy to move?

1 Answer
Jul 6, 2016

The mysterious Dark Matter matters in this expansion.

Explanation:

Like about 70'% water in human body, what matters most in our

universe is that about 70% of missing mass is Dark Matter (DM).

I am not sure that I am right. Yet, in my opinion, expansion when

water becomes steam is analogous to this transitory expansion,

from matter without atoms to its own expanded form...