High Quality Content by WIKIPEDIA articles! The Kerr–Newman metric is a solution of the Einstein-Maxwell equations in general relativity, describing the spacetime geometry in the region surrounding a charged, rotating mass. It is assumed that the cosmological constant equals zero. This solution has not been especially useful for describing astrophysical phenomena, because observed astronomical objects do not possess an appreciable net electric charge, and the cosmological constant is now thought to be non-zero. The solution has instead been of primarily theoretical and mathematical interest.

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