James Webb Space Telescope detects one of the earliest giant supernovae ever seen
Using the James Webb Space Telescope (JWST), astronomers have discovered one of the most distant and therefore oldest supernovae ever seen. This explosion, which rocked the cosmos about 2 billion years after the Big Bang, marked the death of just such a giant star.
Supernovae in the early Universe occurred in different ways. Especially when the exploded star was a stellar monster with a mass 20 times that of the Sun. This supernova, discovered as part of the JWST's Deep Extragalactic Deep Survey (JADES) program, can help scientists add more details to the cosmic picture of stellar life and death they are currently building, Space writes.
Astronomers have discovered one of the most distant and therefore oldest supernovae ever seen
Source: space.com
The supernova, designated as AT 2023adsv, flared up about 11.4 billion years ago in a massive early galaxy. Interestingly, this stellar explosion may be somewhat different from supernovae that have recently occurred in our universe. In particular, the high-energy explosion seems to have been excessively strong.
"The first stars were significantly different from modern stars. They were massive, hot, and they had giant explosions," explains David Coulter, a researcher at the Space Telescope Science Institute (STScI). The scientist also added that they cannot know how many more supernovae JWST will find, but this finding can help them move to the beginning of these first stars and hope to see their explosions.
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