WOW! @NASAWeb captures two galaxies colliding, 450 million lyrs away from Earth. This image of Arp 107 captures a scene that stretches approximately 400,000 light-years across. The spiral galaxy is about six times more massive than its elliptical companion. In Arp 107 two galaxies are caught in the early stages of a merger. This is what the event looked like half a billion years ago, so the supermassive black holes collision might have already happened. I wonder what it looks like now. Thoughts?