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NASA’s Chandra X-ray Observatory has unveiled new insights into the final hours of the star that created Cassiopeia A, one of the most studied supernova remnants in the sky. A study published on ...

Astronomers spot a red supergiant star hidden in dust just before it exploded, solving a long-standing mystery about missing supernovae.

An explosive new space image reveals a star's inner conflict hours before it blew up. The picture shows the inside of a star turning on itself in the short time before it spectacularly exploded, ...

"This discovery heralds a broader understanding of the diversity in massive stars' deaths and a need for deeper investigations into the whole landscape of stellar evolution." Astronomers have ...

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 ...