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Crossword Puzzle
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Black holes

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Black holes
 

Crossword Puzzle

Black holesOnline version

Activity about black holes

by Joan Leonardo Duarte Bernal
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In the 18th century, this hypothetical object was proposed as a star so massive that even light could not escape from it.

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German-born physicist who developed the theory of general relativity, which provided the theoretical framework for understanding black hole

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German physicist and astronomer who found the first exact solution to Einstein’s field equations for a spherical mass.

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The minimum speed an object needs to escape from the gravitational field of a massive object.

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Physicist who, together with Hartland Snyder, studied the gravitational collapse of massive stars in 1939.

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American physicist who helped popularize the term “black hole” in the 1960s.

7

The boundary surrounding a black hole beyond which nothing, not even light, can escape.

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A region where, according to classical general relativity, matter is compressed to an extreme state and spacetime curvature becomes singular.

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