This is what it looks like when two galaxies collide

As Earthlings, the kind of space collision we typically fear the most is one between an asteroid and our home planet. Depending on the size of the rock, it could be devastating to to the human race, but as far as the universe is concerned the utter destruction of Earth would be nothing more than a tiny, insignificant footnote. When it comes to things crashing into each other in space, galaxy collisions are really where the big things happen. NASA's trusty Hubble Space Telescope just captured a g...