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Astronomers witness red supergiant star's death for the first time - New York Post
Jan 14, 2022 23 secs
“Direct detection of pre-supernova activity in a red supergiant star has never been observed before in an ordinary type II supernova.

For the first time, we watched a red supergiant star explode.”.

The star was first detected in summer 2020 by the University of Hawaiʻi Institute for Astronomy Pan-STARRS and the group captured its flash a few months later. 

The data revealed evidence of dense circumstellar material around the star at the time of the explosion. 

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