In the Abell 400 cluster of galaxies, 3C75 is a sight to behold. The slow collision of two supermassive blackholes can be viewed via the enhancement of colored x-rays and radio waves, as seen below, and forms a spectacular sight of unimaginable power and size. They are bound in what is known as a binary system, and are each traveling at mind boggling speeds of about 1200 kilometers per second. Their eventual collision, though not likely to be seen in our lifetime, are in theory sources of what could be intense amounts of gravitational waves, causing possible ripples in spacetime. Which is nuts. Luckily we wont have much to worry about at that point since the binary system is located about 300 million light years away, but it is still an amazing concept that there even is a source that actually bend spacetime, what we essentially call reality
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