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.

Betelgeuse, the bright reddish star marking the shoulder of the constellation Orion, is one of the closest stars to Earth that could plausibly explode as a supernova within a human lifetime, at least ...

Scientists have revealed for the first time a jaw-dropping early view of an exploding supernova. Get any of our free email newsletters — news headlines, sports, arts & entertainment, state legislature ...

A distant star has captured astronomers' attention over the past decade, teasing them with indications that it will soon ...

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 have studied a star located several million light-years away. According to them, it was expected to soon explode ...

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 ...