EntityQ17105538· pop 9· linked from 117 articlesring singularitySign in to saveRing-shaped gravitational singularity of a rotating blackholeConnectionsSchwarzschild metricEntitystellar populationEntityKerr metricEntityexotic starEntityKerr–Newman metricEntityBlack holeConceptgravityEntityBig BangEntityquantum mechanicsEntityInternational Standard Book NumberEntitygeneral relativityEntitysphereEntitysupernovaEntitydigital object identifierEntityneutron starEntitywhite dwarfEntityquasarEntityrotationEntityangular momentumEntitygravitational waveEntityCategoriesBlack holesGravitational singularitiesWormhole theory