-
Asked by slamdunkeroo to Sam on 17 Jun 2013.
-
Sam Geen answered on 17 Jun 2013:
Yep, a lot! Galaxies move towards each other due to gravity, and sometimes they collide and merge together in huge cosmic collisions. Often, the smaller galaxies are eaten by bigger ones.
-
Comments
slamdunkeroo commented on :
are Cosmic collisions nuculear?
Sam commented on :
Colliding galaxies aren’t nuclear – the stars mix up and the spiral disks become one big blob. However, you can get binary stars colliding, which can cause nuclear reactions. One type of supernova is made when two white dwarf stars collide, and make enough energy to create a nuclear explosion.