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 ...

NASA has visualized the cataclysm, which is thought to have caused a mysterious eruption of gamma rays captured by telescopes ...

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

Using the James Webb Space Telescope, a team of international researchers have discovered chemical fingerprints of gigantic ...

An immensely powerful flash detected earlier this year was created by a massive star exploding when the universe was just ...

Some of the elements used by living systems are far more abundant in Cassiopeia A than we thought, hinting that some parts of our galaxy might be more suitable for life than others ...

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

“The fact that we can now watch stars explode and immediately see the structure of the material being blasted into space is ...

Why are the jets emitted by black holes or neutron stars always concentrated like a laser? Craig CaseTwain Harte, California ...

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

The Cassiopeia A supernova remnant reveals that massive exploding stars can forge far more of life's essential ingredients ...