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Amateur astronomers discovered the never-before-seen arc of nebulosity right next to the Andromeda Galaxy, but researchers aren't yet sure if they're physically related.
Data from the closest cosmic supernova explosion to Earth for 10 years was collected by a record number of observers for SETI.
Data from the closest cosmic supernova explosion to Earth for 10 years was collected by a record number of observers for SETI, showing what the collective power of citizen scientists can achieve.
Astronomers argue that a recent study forecasting a relatively imminent stellar explosion misses the mark.
The expiration date of Betelgeuse, a massive dying star about 642 light-years from Earth, is a hot topic in astronomy because of the star’s superlative size and its life cycle stage.