The Economist (US), September 7th, 1991
Black holes consist of just two parts; the point at its center known as the singularity and the outside surface or event horizon. Time, space and gravity become much different as one gets closer. Physical theories on black holes are examined.
BLACK holes may sound complicated; in fact they are about as simple as things get. Whereas people, planets and porcupines are all made up of lots of atoms arranged in complex ways, a black hole consists of just two parts: a central point called the singularity and an imaginary surface surrounding it called the even horizon.
The relationship between the ...
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