One of the big mysteries in astronomy is how galaxies grow and evolve over time. Collisions between galaxies are thought to be key events that shape their development. A stunning collection of 59 new images of colliding galaxies has been released to mark the 18th anniversary of the NASA/ESA Hubble Space Telescope. They give us a unique insight into how galaxies collide to form larger galaxies.
Search mininov.org for "Hubblecast" to find more videos from this series.
All Hubble still and motion pictures are released under the Creative Commons Attribution 3.0 Unported, unless the credit byline indicates otherwise.