A galaxy is just about the largest object in the universe. Our Milky Way galaxy and the Andromeda galaxy may eventually collide. So what happens when galaxies do reach one another?
Colliding Galaxies: Can the Milky Way Galaxy Collide with Andromeda?
Outer Space
Outer Space is Deep, Astronomical, and Covers a Vast Distance
Outer space is a vast area that we basically cannot even comprehend. It is astronomical in size, and this vast distance only adds to its complexity.