Scans of seemingly empty space reveal black holes not far from earth
If a star orbits a black hole, it will appear from a distance to be orbiting empty space. Gaia projects the star’s orbit on a ...
Live Science13 小时
Scientists discover giant galaxy 32 times bigger than Earth's — and they named it 'trouble'
In some cases, the black hole will even spew jets of plasma, millions of light-years across intergalactic space. The plasma ...