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.

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 ...

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 ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

An international team of scientists, led by Northwestern University astrophysicists, has detected a never-before-seen type of exploding star, or supernova, that is rich with silicon, sulfur and argon.