
The still unraveling remains of supernova 1987A are shown here in this image taken by NASA’s Hubble Space Telescope. The bright ring consists of material ejected from the dying star before it detonated. The ring is being lit up by the explosion’s shock wave.Image credit: ESA/Hubble & NASA
The findings offer the best proof yet that star explosions of this type, called Type II or core-collapse supernovae, are inherently asymmetrical, a phenomenon that had been difficult to prove before now.
The complete story, courtesy of Caltech, can be found here.