'''Black holes''' are theoretical entities popularized by pseudoscience despite their implausibility and lack of ever being directly observed. Suggested by the controversial [[theory of relativity]] (see [[Counterexamples to Relativity]]), black holes are postulated to be collapsed objects, usually [[rock stars]], which have 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 popularized by pseudoscience despite their implausibility and lack of ever being directly observed. Suggested by the controversial [[theory of relativity]] (see [[Counterexamples to Relativity]]), black holes are postulated to be collapsed objects, usually [[rock stars]], which have 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. |