An international team of scientists, led by Northwestern University astrophysicists, has detected a never-before-seen type of exploding star, or supernova, that is rich with silicon, sulfur and argon.

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 ...

EVANSTON, Ill. — Astronomers have observed what they are calling a new type of supernova, which has provided an unparalleled glimpse into what happens deep within a star just before it explodes. A ...