"It's really difficult to overstate how bad we are at finding intermediate mass black holes." ...

Astronomers discover a star in Andromeda that may have collapsed into a black hole instead of exploding as a supernova.

DS1, collapsed into a black hole without exploding, revealing how stars die in silent “failed supernova” events.

If confirmed, this disappearing act might provide the closest and best observational evidence for the birth of a black hole ...

Astronomers have witnessed a rare cosmic event: a massive star that didn’t explode in a spectacular supernova, but instead ...

Hubble captures a dying star cracking open the dazzling, dust-filled Egg Nebula in a rare cosmic transformation.

The event was first recorded in 2014, when a Nasa space telescope noticed a massive star in the Andromeda galaxy slowly ...

A massive star brightened in infrared light, then vanished without exploding. Astronomers uncovered the quiet birth of a black hole.

Astronomers watched a massive star in the Andromeda Galaxy vanish over a decade, providing rare evidence of a "failed ...

A massive star 2.5 million light-years away simply vanished — and astronomers now know why. Instead of exploding in a supernova, it quietly collapsed into a black hole, shedding its outer layers in a ...

Astronomers tracked a star in Andromeda as it dimmed and vanished without the usual fiery explosion, offering rare clues to how black holes form.