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A '''singularity''' (sometimes '''spacetime singularity''') is, approximately, a place where quantities which are used to measure the [[gravitational]] field become [[infinity|infinite]]. Such quantities include the curvature of [[spacetime]] or the density of [[matter]]. More accurately, a [[spacetime]] with a singularity contains geodesics which cannot be completed in a smooth manner. The limit of such a geodesic is the singularity.

A '''singularity''' (sometimes '''spacetime singularity''') is, approximately, a place where quantities which are used to measure the [[gravitational]] field become [[infinity|infinite]]. Such quantities include the curvature of [[spacetime]] or the density of [[matter]]. More accurately, a [[spacetime]] with a singularity contains geodesics which cannot be completed in a smooth manner. The limit of such a geodesic is the singularity.

==Notes and references==

==Notes and references==

* Formation of naked singularities: The violation of cosmic censorship  [http://link.aps.org/abstract/PRL/v66/p994]  

* Formation of naked singularities: The violation of cosmic censorship  [https://link.aps.org/abstract/PRL/v66/p994]  

* General Relativity ISBN 0-226-87033-2 }}

* General Relativity ISBN 0-226-87033-2

* Gravitation, ISBN 0-7167-0344-0 }} §31.2 The nonsingularity of the gravitational radius, and following sections; §34 Global Techniques, Horizons, and Singularity Theorems

* Gravitation, ISBN 0-7167-0344-0 §31.2 The nonsingularity of the gravitational radius, and following sections; §34 Global Techniques, Horizons, and Singularity Theorems

==Further reading==

==Further reading==