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Scientists find white dwarf star hurtling across the galaxy

Remnants of a supernova

Scientists at the Kitt Peak National Observatory in Arizona have spotted a half-burnt white dwarf star hurtling across the galaxy. They think the unique star, described Thursday in the journal Science, was launched by an exploding supernova that didn't entirely destroy it. If confirmed, it would be the first direct evidence of these unique supernovae.

Why it matters: Recently, researchers discovered a type of dim supernova. These mini-novas are thought to be formed when a white dwarf partially explodes. If that is what sent this star flying, it could confirm that theory.