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Hey Everyone. We have some fun new merch at the merch store, well let you know more at the end of the episode. The primary characteristic that defines black holes is in the name. Black holes are black. The gravitational pull at the event horizon is so powerful that not even light can escape. In this case, black means absence of light. But we also think of black as indicating absence of colour. But it turns out there is a way to make a coloured black holeas long as by colour you mean quantum chromodynamic charge. There are two main types of black holes that we definitely know exist. There are the stellar black holes that might be 10-50 times the mass of the Sun. These are the ones left behind when the most massive stars end their lives in supernova explosions and these things are physically tiny on astronomical scales, with event horizons only tens of kilometers across. Then we have the supermassive black holes in the centers of galaxies, weighing in at m
