A rare glimpse of a star before it went supernova defies expectations
7 hours ago A rare glimpse of a star before it exploded in a fiery supernova looks nothing like astronomers expected, a new study suggests. Images from the Hubble Space Telescope reveal that a relatively cool, puffy star ended its life in a hydrogen-free supernova. Until now, supernovas without hydrogen were thought to originate only from extremely hot, compact stars. The discovery “is a very important test case for stellar evolution,” says Sung-Chul Yoon, an astrophysicist at Seoul National University in South Korea, who was not involved in the work. Theorists have some ideas about how m...
Source: sciencenews.org
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