In a galaxy where change is usually measured in millennia, NASA has assembled a movie that shows Kepler’s supernova remnant growing across 25 years of observation.. The object traces back to 1604, ...
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A spinning magnetar twists space-time itself, causing the disk of material around it to wobble and produce the ultra-bright flashes of this peculiar kind of supernova. (Santa Barbara, Calif.) — For ...
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