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This image, taken with Hubble's Wide Field and Planetary Camera 2in 1995, shows the orange-red rings surrounding Supernova 1987A in the Large Magellanic Cloud. The glowing debris of the supernova explosion, which occurred in February 1987, is at the center of the inner ring. The small white square indicates the location of the STIS aperture used for the new far-ultraviolet observation.

How hot are atoms in the shock wave of an exploding star?

Scientists at the Penn State have developed a new technique to measure the temperature of atoms during the explosive death of a star. Scientists combined...