"NCIS: Origins" left fans with their jaws on the floor after this week's fall finale -- with a surprise wedding on one side ...

Astronomers have spotted the longest gamma-ray burst ever seen, a cosmic explosion that lasted seven hours — and they ...

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

The flash was spotted on March 14 by a French-Chinese space telescope called SVOM, which launched last year on a mission to track gamma-ray bursts, the brightest and most powerful explosions in the ...

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

Astronomers detected a powerful cosmic flash from a star that exploded when the universe was just 5% of its current age, 13 ...

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

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

Scientists have found compelling observational evidence of supermassive "first stars" in a galaxy called GS 3073 that blazed ...

Astronomers watched as a black hole whipped up cosmic winds that shot material into space at 37,280 miles per second (60,000 ...

Nearly 70 years ago, a team of scientists and military officers from the US Atomic Energy Commission and the Department of ...