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The Mysterious Rings of Supernova 1987A

Thirty years ago, in 1987, the brightest supernova in recent history was observed in the Large Magellanic Cloud. Supernova 1987A is surrounded by curious outer rings that appear as a flattened figure eight. The Hubble Space Telescope monitors these rings, but their origin remains a mystery. The object at the center is what remains of the violent stellar explosion.