Dead Stars

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Dead Star’s Ghostly Glow: Astronomers discovered a real “tell-tale heart” in space, 6,500 light-years from Earth. The “heart” is the crushed core of a long-dead star, called a neutron star, which exploded as a supernova and is now still beating with rhythmic precision. Evidence of its heartbeat are rapid-fire, lighthouse-like pulses of energy from the fast-spinning neutron star. The stellar relic is embedded in the center of the Crab Nebula, the expanding, tattered remains of the doomed star.

Credits: NASA and ESA, Acknowledgment: M. Weisskopf/Marshall Space Flight Center

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