Scientists may finally know why this infamous supernova wears a 'string of pearls'
SN 1987A is ringed by a strange string of hydrogen pearls that have puzzled astronomers for a long time, but researchers may finally have an explanation.
TroibNews 
SN 1987A is ringed by a strange string of hydrogen pearls that have puzzled astronomers for a long time, but researchers may finally have an explanation.
