![]() Sanduleak -69° 202 was a blue supergiant with a mass of about 18 solar masses in the Large Magellanic Cloud. Since observed extensively at all wavebands, SN1987A has helped astronomers better understand the death of massive stars. The object, named Supernova 1987A, was a massive star ripping itself apart in a violent event that released as much energy for a short period as the rest of the galaxy combined. ![]() What was remarkable was that this was the first naked-eye supernova (SN) visible since 1604. In February 1987 a new star appeared in the Large Magellanic Cloud, a neighbouring galaxy 170,000 light years away. ![]() M1, the Crab Nebula, the remnant of a supernova that exploded in AD 1054.
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