Which would be more likely to collide: stars with stars or galaxies with galaxies?

1 Answer
Feb 3, 2016

Collisions between stars are rare.


Many galaxies are members of groups or clusters. Since groups and clusters contain so many galaxies relatively close together, it should not be surprising that galaxies sometimes collide with each other.

Although galaxy collisions are common, stars in each galaxy are so far apart that collisions between stars are very rare.