A huge set of new Hubble Space Images show galactic collisions in action and the variety of peculiar forms that merging galaxies can take.
The series of 59 new photographs, released today on the 18th anniversary of the Hubble Space Telescope's launch, are the largest collection of Hubble images ever released together.
Galaxy mergers are now known to be more common than was previously thought. They were even more common in the early universe than they are today. The early universe was smaller, so galaxies were closer together and therefore more prone to smash-ups. Even apparently isolated galaxies can show signs of past mergers in their internal structure....
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