Black Hole History

A black hole is a region of space-time from which nothing, not even light, can escape. According to the general theory of relativity, it starts existing...

Black Hole of Calcutta was a dungeon in old Fort William, Calcutta, India. It was 18 feet (5.5 metres) long and 14 feet (4 metres) wide, and had two small...

particles (very small objects that make up things in the universe), black holes, the Big Bang (the theory that the universe started from one point),...

Information Loss in Black Holes, Cambridge University Press, 2005 Hawking, Stephen (1988). A brief history of time: from the big bang to black holes. Bantam. Hawking...

used to describe the center of a black hole where gravity is thought to approach infinity. In the center of each black hole is a singularity, a point where...

relativity, an event horizon is the part of a black hole where light cannot escape. Imagine the black hole to be like a ball that you could see in a large...

"Fell on Black Days" single and Songs from the Superunknown. A live version of the song appears on the "Black Hole Sun" and "Fell on Black Days" singles...

Hole was an American rock band. The band started in 1989 in Los Angeles, California and ended in 2002. In 2009, the band got back together with new members...

principles behind nuclear fission. He is best known for using the term "black hole" and for inventing the terms "quantum foam", "neutron moderator", "wormhole"...

roadie for Black Flag, who was shot to death during a robbery in December 1991 after attending a Hole show in West Hollywood, California. Hole's first studio...

large supermassive black hole. This is a strong source of radiation at many wavelengths, particularly radio waves. This black hole is the first and, to...

strong field of gravity. It is caused by extreme tidal forces. Near a black hole, the pulling and pushing are so powerful that no object can resist it...

found. Its people built the first electron microscope, found the first black hole, and began a touchscreen technology called multi-touch. It is the university...

fire’ were fired from a sort of catapult. The black powder was packed in a closed tube that had a hole in one end for escaping hot gases. The tube was...

include binary star systems composed of white dwarfs, neutron stars, or black holes. In physics, gravitational waves are ripples in the curvature of spacetime...

black bellies, and white sides. Male frogs do not have vocal slits in their throats, but they can sing anyway. The female frog lays her eggs in holes...

Amazon lowlands. The male frog finds a hole in a tree trunk with a pool of water in it 10 to 40 cm deep. The holes are sometimes as close to the ground...

elbow pads, or the all-in-one Gloves - Protect the hands. Right glove has a hole in it to hold the stick Box - Protects the groin Shorts - Protect the thighs...

forest, from limestone or from more primitive holes in the ground. The bottom is sloped into an outlet hole, to allow the tar to come out. The wood is split...

is, in its simplest form, a box with a hole in its front. There is a special piece of glass in front of the hole called a lens. To take a photograph, the...