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900-year-old Chinese supernova mystery points to strange nebula

900-year-old Chinese supernova mystery points to strange nebula
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In the year 1181 AD, a new bright point of light as luminous as the planet Saturn appeared to Chinese and Japanese skygazers for a little more than six months before disappearing.



September 16, 2021 at 11:30PM
via Space.com read more...

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