The region near the Milky Way's centre is dominated by the supermassive black hole that resides there. Sagittarius A*'s overwhelming…
We can't see them directly, but we know they're there. Supermassive black holes (SMBHs) likely dwell at the center of…
Astronomers working with NASA's Neil Gehrels Swift Observatory have spotted something unusual. The observatory's X-Ray Telescope (XRT) has captured emissions…
In astronomy, we speak casually of extremely large numbers and extremely vast distances as if they're trivial. A supermassive black…
Supermassive black holes (SMBHs) lurk in the center of large galaxies like ours. From their commanding position in the galaxy's…
Black holes swallow everything—including light—which explains why we can't see them. But we can observe their immediate surroundings and learn…
The death of a star is one of the most dramatic natural events in the Universe. Some stars die in…
Something extraordinary happens about every 10,000 to 100,000 years in galaxies like the Milky Way. An unwary star approaches the…
When a flash of light appears somewhere in the sky, astronomers notice. When it appears in a region of the…
Researchers using the IceCube Neutrino Observatory have detected neutrinos emanating from the energetic core of an active galaxy millions of…