Siteadmin, Check users, nsTeam1RO, nsTeam1RW, nsTeam1_talkRO, nsTeam1_talkRW, oversight, Administrators
30,650
edits
Changes
mass => mass (science)
[[Image:Iu8969hu.jpg|right|thumb|300px|Artist's conception of a binary system consisting of a black hole and a main sequence star. The black hole is drawing matter from the main sequence star via an [[accretion disk]] around it, and some of this matter forms a gas jet.]]
[[Image:Iu8969hu.jpg|right|thumb|300px|Artist's conception of a binary system consisting of a black hole and a main sequence star. The black hole is drawing matter from the main sequence star via an [[accretion disk]] around it, and some of this matter forms a gas jet.]]
A '''black hole''' is a collapsed star which has become so [[mass]]ive that within a certain radius its [[escape velocity]] exceeds the [[speed of light]]. This it absorbs all matter and energy within that radius.
A '''black hole''' is a collapsed star which has become so [[mass (science)]]ive that within a certain radius its [[escape velocity]] exceeds the [[speed of light]]. This it absorbs all matter and energy within that radius.
Black holes have become an increasingly popular topic for magazines, the science page of the [[New York Times]], and science fiction, but whether they really exist remains uncertain.
Black holes have become an increasingly popular topic for magazines, the science page of the [[New York Times]], and science fiction, but whether they really exist remains uncertain.