In March, a brief flash of X-rays lit up the sky in a distant galaxy. It lasted only moments, but it carried a profound message: a star had just begun to die. Get breaking news anytime, anywhere.

WASHINGTON (Reuters) -Astronomers have observed the calamitous result of a star that picked the wrong dance partner. They have documented what appears to be a new type of supernova, as stellar ...

Add Yahoo as a preferred source to see more of our stories on Google. It has been considered by some that global cooling in the Plio-Pleistocene might have been due to changes in ocean currents. This ...

Astronomers using the James Webb Space Telescope may have discovered a supernova erupting just 1.1 billion years after the Big Bang.

This image, taken with ESO’s Very Large Telescope (VLT), shows the supernova remnant SNR 0509-67.5. Astronomers studying the night sky from the Southern Hemisphere have uncovered a supernova — the ...

WASHINGTON — The explosive death of a star, a supernova, is among the most violent cosmic events, but precisely how this cataclysm looks as it unfolds has remained mysterious. Scientists now have ...

The universe is almost 13.8 billion years old, but every now and then, astronomers detect echoes from its distant past. One such occasion occurred earlier in 2025, when NASA scientists reported ...

My hypothesis is that remnants of a supernova—an exploding star —had an impact on Earth's past climate, causing global cooling, between 3 million and 2.6 million years ago and that this indirectly ...