What are galaxy collisions?

Question

any galaxies. and do you have any videos

Answer 1

You can't make a video of a galactic collision, they take millions of years. There are pictures of interacting (colliding) galaxies on the Hubble website (www.hubblesite.org)
and here http://www.astr.ua.edu/pairs2.html

Answer 2

There is a simulation on
http://www.cita.utoronto.ca/~dubinski/tflops/

go down about a quarter of the way to find the links (depending on the format you want).
Most movies are four years old but the 4th one is updated (2006)


The page also shows individual frame images, with 90 million years between each frame.