EntityQ5452017· pop 10· linked from 176 articlesfirewallSign in to savehypothetical phenomenon where an observer falling into a black hole encounters high-energy quanta at the event horizonConnectionsgravitational waveEntitystellar populationEntityexotic starEntityKerr–Newman metricEntityER=EPREntityBlack holeConceptStephen HawkingPersonBig BangEntityWayback MachineEntitysupernovaEntitydigital object identifierEntityparadoxEntityneutron starEntitywhite dwarfEntityquasarEntitystring theoryEntityfirewallEntityacronymEntityquantum entanglementEntityquantumEntityCategoriesBlack holesQuantum gravityQuantum mechanical entropyTheorems in general relativity