If the Universe is expanding, then why will Andromeda collide with the Milky Way?
15538
If the Universe is expanding, how is that galaxies run into each other?
14188
How does dark energy allow the universes expansion to accelerate?
75058
Why isn't an infinite, flat, nonexpanding universe filled with a uniform matter distribution a solution to Einstein's equation?
140641
Is the Star Wars Universe just one galaxy?
10362
Does the universe have a center?
99374
Can we observe an edge of the universe?
76365
Why do galaxies "disappear?"
102370
At what speed does our universe expand?
23347
Are all galaxies we see really our Milky Way? Any possibility?
89012
How will the super massive black hole affect our galaxy?
148341
What caused the expansion of the universe to slow down after the inflationary epoch?
123415
Spacial curvature and expanding space
95879
Other explanation for cosmological redshift?
60364
Universe Expansion as an absolute time reference
28757
What happens when a "matter-black-hole" and an "anti-matter-black-hole" collide?
107971
Hubble's law and conservation of energy
10377
Is redshift the only way by which we can tell that space is expanding?