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The Milky Way's Speediest Stars Could Solve a 50-Year-Old Mystery
A remnant of a nearby Type 1a supernova that flashed in Earth's skies in November 1572. Today, astronomers use Type 1a supernovae to measure vast cosmological distances.
Credit: MPIA/NASA/Calar Alto Observatory
Ken Shen was racing against the sun.
From Scientific American
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