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The Milky Way's Speediest Stars Could Solve a 50-Year-Old Mystery

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Type 1a supernova

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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