1932
Cosmic  


A mechanism is proposed for the collapse of stars.

A mechanism is proposed for the collapse of stars. Starting from General Relativity, the German astronomer Karl Schwarzschild showed in 1916 that a dense body can produce gravity so strong that light cannot escape: a black hole. In 1932, the Indian-born American astrophysicist Subrahmanyan Chandrasekhar (left) calculates that a star of a certain mass collapses under its own gravity, becoming a white dwarf. For a larger mass the collapse can lead to a neutron star, and finally a black hole.
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