Questions of Light and Space (Introduction)

by David Turell , Tuesday, October 12, 2010, 16:52 (5156 days ago) @ Balance_Maintained

If space is expanding, and everything is moving away from everything else at an ever increasing speed as described here(Subheading observational evidence), how can Nebula collide?-The Milky Way and Andromeda are approaching each other and will meet in 2 billion years. Other collisions of galaxies are seen all the time . It has to do with local movement and gravity. The universe is so vast that there are local events and overall uniform events. Great walls of galaxies and great spaces, but still considered uniform. Nebula is the old word for galaxy.