Astronomers have identified the origin of a mysterious flash that occurred three years ago.
A satellite galaxy dwarfed by the Milky Way has a black hole nearly as massive as the one at the center of our galaxy.
Astronomers might have spotted a stellar-mass black hole in another galaxy — but not everyone agrees with what they found.
Astronomers witness the unfurling of a black hole-powered mushroom cloud, a baby super-Jupiter, and a magnetic "tunnel" around the solar system.
Astronomers have used the death of a star to uncover details about a hidden intermediate-mass black hole.
This week in astronomy news, we learn that some white dwarfs still burn and image X-rays from black holes almost 12 billion light-years away.
Observations of the nearest radio galaxy, Centaurus A, provide the highest-resolution look at the long jets shooting from the galaxy’s supermassive black hole.
Two new detections give astrophysicists a novel look at how stellar remnants pair up.
This week in astronomy pictures: Peer into our galaxy's busy core, watch Clyde's Spot unravel at Jupiter, and see a stunning Hubble photo of a lopsided galaxy.