The exploding star is 2.2 billion light years away, and is named SN 2021yfj. The Keck data showed the presence of ionized silicon, sulfur, and argon. These have never been observed in a supernova ...

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 ...

SN 2021yfj is a new kind of supernova, challenging our understanding of stellar evolution. Its progenitor lost its outer shells well before the supernova happened and only consisted of its ...

An international team of scientists has uncovered new clues about how stars lived and died billions of years ago by studying ...