1. How are galaxies distributed in the universe? 2. (a) How does the typical size of a galaxy…

1.       How
are galaxies distributed in the universe?

2.       (a)
How does the typical size of a galaxy relative to the typical distance between
galaxies compare with the corresponding ratio for stars in a galaxy? (b) Which
would you expect to be more common, collisions between galaxies or collisions
between stars?