can an object be stationary in space, I mean absolutely stationary?

Question

I know an object can be stationary relative to another, but is there anything absolutely stationary in the universe? Or is space itself expanding and thus nothing is stationary?

In: Physics

Answer 1

There is no such thing as an absolute frame of reference in our universe.

However, there is a frame where the CMB is at rest.

https://einstein.stanford.edu/content/relativity/a10854.html