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.
Hubble discovers a double Quasar in the distant Universe
They existed when the universe was just 3 billion years old.
Hubble sees a black hole streaking too fast to take time for a snack
A runaway black hole creates a trail of stars.
An explosion the size of our solar system baffled scientists
The flattest explosion ever seen in space.
A new family of black holes discovered
The new family already has two members, and both are closer to Earth.
Brightest gamma-ray burst ever reveals new mysteries of cosmic explosions
Scientists believe the gamma-ray emission, which lasted over 300 seconds, is the birth cry of a black hole.
Scientists discovered one of the biggest black holes ever
An object over 30 billion times the mass of our Sun.
AI uncovered a secret equation for weighing galaxy clusters
A better way to estimate the mass of colossal clusters of galaxies.
Indirect evidence found for the existence of dark matter surrounding black holes
The study provides an important new direction for future dark matter research.
Discovery of bubble-blowing relativistic jets at the center of the Teacup galaxy
Study reveals a process that explains the peculiar morphology of the central region of the Teacup galaxy.
Chandra detected a galaxy lonelier than expected
The result may push the limits for how quickly astronomers expect galaxies to grow in the early universe.