milky way maps
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Incredibly Detailed Image Of Our Galaxy’s Centre Shows How Things Move Around A Black Hole
There’s a black hole called Sagittarius A* at the centre of our galaxy. It has four million times the mass of the sun, but is only around the size of Mercury’s orbit. It’s 26,000 light years away, but let’s say some unfortunate mishap brought you within a light year or two of that behemoth. What…