How Far Away Is It 15 Colliding Galaxies (1080p)

Text at In this segment of our How far away is it video book, we cover interacting or colliding galaxies. We begin with the trajectory of Andromeda with respect to our Milky Way. They are on a collision course. We describe what it means for galaxies to collide given the great distances between stars within each galaxy. We then take a look at some of the interacting galaxies photographed by the Hubble Telescope. These include: NGC 2207 with IC 2163; Apr 256; NGC 624