While sifting out signatures of supernova remnants, a high-schooler stumbled upon the afterglow of a dormant black hole. It ...

A big burst of brightness suddenly popped up. Then, it calmed down again. We couldn’t find a pattern in this activity. It appears to be random. The activity profile of this black hole was new ...

Our understanding of black holes, time, and the mysterious dark energy that governs the universe may be on the verge of a ...

The burst occurred in a tiny galaxy containing a mass of stars about 400 times less than our Milky Way's. Therefore, if the galaxy hosts a massive black hole, its mass must also be small ...

Black holes are points in space that are so dense ... enormous stars go out with a bang in massive explosions known as supernovae. Such a burst flings star matter out into space but leaves behind ...

"The higher the spin, the more energy the black hole can release." Black holes may leak more energy to their surroundings than previously suspected — and the faster these voids spin, the more ...

A big burst of brightness suddenly popped up ... "The activity profile of this black hole was new and exciting every time that we looked at it." Though they're effectively invisible, astronomers ...

A new study using NASA 's James Webb Space Telescope has revealed a variety of light coming from the black hole Sagittarius A* — or rather its accretion disk, the ring of rapidly spinning material ...

A big burst of brightness suddenly popped up. Then, it calmed down again. We couldn't find a pattern in this activity. It appears to be random. The activity profile of the black hole was new and ...

Feb. 19, 2025 — Within the Dark Energy Spectroscopic Instrument's early data, scientists have uncovered the largest samples ever of intermediate-mass black holes and dwarf galaxies hosting an ...

This preferred direction of spin might be due to one of two reasons: either our entire universe exists in a black hole, or astronomers have been measuring the universe's expansion incorrectly ...