A star exploding at the end of its life has rocked the cosmos like no other that humanity has ever seen.
In 2021, astronomers watched in astonishment as a supernova 2.2 billion light-years away named SN2021yfj bloomed, rich with silicon, sulfur, and argon – something never before seen in an exploding star.
This material, says a team led by astrophysicist Steve Schulze of Northwestern University in the US, constitutes the first direct evidence of the theorized concentric shells of different elements that make up the interiors of massive stars, validating the star life cycle, and expanding our knowledge about how massive stars end their lives.
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"This event quite literally looks like nothing anyone has ever seen b