In 1989, astronomers discovered pulsar in remnants of Supernova 1987A.
It was the first supernova seen in 1987, so it was officially dubbed Supernova 1987A, or SN87A for short. The star that blew up (Sanduleak -69 202) was the first blue supergiant ever seen to explode.
Learn more at http://blogs.discovermagazine.com/badastronomy/2011/06/09/a-supernova-is-reborn/