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'''Black holes''' are theoretical entities which cannot be directly observed and may not exist.  Suggested by the debatable [[theory of relativity]] (see [[Counterexamples to Relativity]]), black holes are postulated to be collapsed objects, usually [[stars]], which have supposedly become so [[dense]] that within a certain radius their [[escape velocity]] exceeds the [[speed of light]]. Thus, they absorb all matter and energy within that radius.  Light and matter can enter, but nothing can ever escape.

'''Black holes''' are theoretical entities which cannot be directly observed and may not exist.  Suggested by the debatable [[theory of relativity]] (see [[Counterexamples to Relativity]]), black holes are postulated to be collapsed objects, usually [[stars]], which have supposedly become so [[dense]] that within a certain radius their [[escape velocity]] exceeds the [[speed of light]]. Thus, they absorb all matter and energy within that radius.  Light and matter can enter, but nothing can ever escape.

Black holes are increasingly favored by [[liberal]] publications, such as the science page of the [[New York Times]] and glossy magazines, as well as science fiction writers.  As with the related theoretical concept of a "[[wormhole]]",<ref>The prediction of the existence of wormholes, and its naming in 1957, predates the prediction and naming (1967) of a black hole.[http://www.nytimes.com/2008/04/14/science/14wheeler.html?pagewanted=print]</ref> it is impossible to prove that no black hole exists anywhere, and thus they fail the [[falsifiability]] requirement of science.  

Black holes are increasingly favored by [[liberal]] publications, such as the science page of the [[New York Times]] and glossy magazines, as well as science fiction writers.  This includes a number of movies: Event Horizon (1997), The Black Hole (TV, 2006), and Interstellar (2014).  As with the related theoretical concept of a "[[wormhole]]",<ref>The prediction of the existence of wormholes, and its naming in 1957, predates the prediction and naming (1967) of a black hole.[http://www.nytimes.com/2008/04/14/science/14wheeler.html?pagewanted=print]</ref> it is impossible to prove that no black hole exists anywhere, and thus they fail the [[falsifiability]] requirement of science.  

Because of quantum-mechanical phenomena involving Hawking Radiation, discussed later in the article, black holes must emit radiation and thus are a logical contradiction.this is not true on an extremely microscopic level, but is true for all practical purposes.

Because of quantum-mechanical phenomena involving Hawking Radiation, discussed later in the article, black holes must emit radiation and thus are a logical contradiction.this is not true on an extremely microscopic level, but is true for all practical purposes.