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The Universal ForceGravity - Creator of Worlds$
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Louis Girifalco

Print publication date: 2007

Print ISBN-13: 9780199228966

Published to Oxford Scholarship Online: January 2008

DOI: 10.1093/acprof:oso/9780199228966.001.0001

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Beyond existence

Beyond existence

Chapter:
(p.245) 19 Beyond existence
Source:
The Universal Force
Author(s):

Louis A. Girifalco

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199228966.003.0019

Gravity is responsible not only for the existence of stars and planets; it also creates the weirdest objects imaginable. A body with mass greater than 1.4 solar masses cannot remain a white dwarf and will collapse into a neutron star. But if the mass is greater than about two and a half solar masses, the collapse will continue until it becomes a black hole. This is the strangest object in the universe. Its gravity is so strong that even light cannot get out of it. Anything near it is sucked in, crushed to a point, and approaches infinite density. The laws of physics as now known do not apply at the centre of a black hole and the very meaning of its existence is in doubt.

Keywords:   gravity, black hole, infinity, laws of physics, stars, planets, neutron star, infinite density

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