Black Hole
A black hole is a place in space where gravity is so strong that it pulls so much. Even electromagnetic radiation such as light cannot escape it; because no light can get out, people can’t see black holes.
The gravity is so strong because matter has been squeezed into a tiny space. This compression happens when a star is dying. The death of a massive star can form a black hole.
Black holes were predicted by Einstein’s most famous theory of general relativity, which showed that when a massive star dies, it leaves behind a small, dense remnant core. If the core’s mass is more than about three times the mass of the Sun, the equations show that the force of gravity overwhelms all other forces and creates a black hole.
Supermassive black holes have a significant impact on galactic chemistry
This provides another piece of the puzzle for understanding how galaxies evolve.
The Hyades star cluster may contain the nearest black holes to Earth
Black holes are one of the most mysterious and fascinating phenomena in the Universe.
NASA’s Swift spots a snacking black hole
Now, with this new ability, it’s doing even more cool science.
Our universe may be a bit more stable than was supposed
JWST survey reveals fewer supermassive black holes than presumed.
First-time evidence of the presence of an accretion disk within the active galactic nucleus
Accretion disks: How big are they really?
A giant black hole tore apart a massive star
Astronomers have made a thorough forensic study of a star when it ventured too close to a giant black hole.
Astronomers reveal new features of galactic black holes
First detection of a quasi-periodic oscillation signal in the radio band from a Galactic black hole system.
Researchers detected the brightest gamma-ray burst
We expect to see one like this only every 10,000 years or so.
The most distant active supermassive black hole to date discovered
It is less massive than any other yet identified in the early universe.
Black hole ripples may be able to measure the universe’s expansion
A new way to pin down the distance to these exotic objects.