Deep-Space Photos: Hubble's Greatest Hits
NASA / ESA
Dueling Galaxies
About 300 million light years from Earth, twin galaxies face off in the constellation Coma Berenices. The galaxies' dynamic look is belied by their timid nickname; they are known as "The Mice" because of their long, glowing tails.
Get the Latest Photos from Time.com
Get TIME photos and pictures of the week delivered directly to your inbox.