NASA’s James Webb Telescope discovers the oldest supernova ever seen, offering insights into early universe star formation ...

A faint, tiny flash of red light glimpsed at the Cosmic Dawn more than 13 billion years ago has smashed the record for the ...

"This observation also demonstrates that we can use Webb to find individual stars when the universe was only 5% of its ...

The bright binary star system V Sagittae will flare up multiple times before finally going supernova within the next 100 ...

The James Webb Space Telescope and other international observatories have spotted a 13-billion-year-old supernova. On Tuesday ...

Astronomers have sighted the oldest known stellar explosion, dating back to when the universe was less than a billion years ...

When a massive star dies, astronomers expect a familiar chemical script: hydrogen and helium on the outside, heavier elements ...

Some of the elements used by living systems are far more abundant in Cassiopeia A than we thought, hinting that some parts of ...

For the first time, scientists have made a clear X-ray detection of chlorine and potassium in the wreckage of a star using ...

Berkeley and elsewhere have performed spectroscopic and photometric study of a peculiar supernova designated SN 2021ukt, which underwent a transition from Type IIn to Type Ib. Results of the new study ...

For years, scientists thought they understand what happens when stars explode. New earliest-ever mages of supernova events ...

XRISM’s high-precision X-ray data revealed unusually strong signatures of chlorine and potassium inside the Cassiopeia A supernova remnant. These levels are far higher than theoretical models ...