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What is a black hole explained?
Black holes are regions in space where an enormous amount of mass is packed into a tiny volume. This creates a gravitational pull so strong that not even light can escape. They are created when giant stars collapse, and perhaps by other methods that are still unknown.
What is black hole and how it is formed Upsc?
Black holes are extremely dense points in space that create deep gravity sinks from which even light cannot escape. It can be formed by a death of a massive star. A black hole takes up zero space but does have mass, that used to be a star. And black holes get more massive as they consume matter near them.
What is a black hole in astrophysics?
A black hole is a cosmic body of extremely intense gravity from which even light cannot escape. Black holes usually cannot be observed directly, but they can be observed by the effects of their enormous gravitational fields on nearby matter.
What are the 4 types of black holes?
There are four types of black holes: stellar, intermediate, supermassive, and miniature. The most commonly known way a black hole forms is by stellar death. As stars reach the ends of their lives, most will inflate, lose mass, and then cool to form white dwarfs.
Why is it called Blackhole?
Black holes are volumes of space where gravity is extreme enough to prevent the escape of even the fastest moving particles. Not even light can break free, hence the name ‘black’ hole.
How are black holes formed in simple words?
Stellar black holes form when the center of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts part of the star into space. Scientists think supermassive black holes formed at the same time as the galaxy they are in.
Who introduced black hole in India?
The Black Hole of Calcutta was a dungeon in Fort William, Calcutta, measuring 14 by 18 feet (4.3 m × 5.5 m), in which troops of Siraj-ud-Daulah, the Nawab of Bengal, held British prisoners of war on the night of 20 June 1756.
Who gave black hole concept in India?
C. V. Vishveshwara (6 March 1938 16 January 2017) was an Indian scientist and black hole physicist. Specializing in Einstein’s General Relativity, he worked extensively on the theory of black holes and made major contributions to this field of research since its very beginning.
Who discovered the first black hole?
A black hole is a volume of space where gravity is so strong that nothing, not even light, can escape from it. This astonishing idea was first announced in 1783 by John Michell, an English country parson.
What is study of black holes called?
CfA astronomers use telescopes across the entire spectrum of light, from radio waves to X-rays to gamma rays. A Surprising Blazar Connection Revealed. Studying the infall of matter called accretion onto black holes, using NASA’s Chandra X-ray Observatory and other telescopes.