This image shows a neutron star -- the core of a star that exploded in a massive supernova. This particular neutron star is known as a pulsar because it sends out rotating beams of X-rays that sweep past Earth like lighthouse beacons.
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Details
Title: Beacons of X-ray Light Animation
Creator: NASA/JPL-Caltech
Date Created: 2014-10-08
Rights: JPL
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