Astronomers have discovered strong evidence for the closest supermassive black hole outside of the Milky Way galaxy. This ...
The Milky Way is one of the biggest in the observable universe: Even if you traveled at the speed of light, it would take 100 ...
The disc of plasma surrounding the black hole at the heart of the Milky Way is constantly emitting flares both large and small.
A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.
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