His results , which Hawking presented from 1974 , showed that black holes emit radiation , known today as Hawking radiation , which may continue until they exhaust their energy and evaporate .
[ 168 ] [ 166 ] His results , which Hawking presented from 1974 , showed that black holes emitradiation , known today as Hawking radiation , which may continue until they exhaust their energy and evaporate .