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Watch out for the giant scorpion hiding in the summer sky

Scorpius is one of the few constellations that actually resembles its namesake — and this summer is the perfect time to find ...

A single origin story for the Milky Way's most mysterious stars

Lurking at the heart of the Milky Way, Sagittarius A* (Sgr A*) is a supermassive black hole four million times the mass of ...