The blast may have been a kilonova — a type of neutron star merger — in the wake of a more traditional supernova.

It's the last clearly observed supernova in the Milky Way, Gassel said.

A massive star may have burst, leaving behind two dense, dead cores, which then collided and caused another explosion ...

"This was many times more energetic than any similar event and more than any known explosion powered by the collapse of a ...

Observing the Universe often means contemplating phenomena that occurred millions of years ago. But sometimes, the opportunity arises to capture a cosmic event almost in real-time, as if we were ...

Swift observations with the European Southern Observatory's Very Large Telescope (ESO's VLT) have revealed the explosive death of a star just as the blast was breaking through the star's surface. For ...

Scientists have detected the most distant supernova ever seen, exploding when the universe was less than a billion years old.

A research team led by Caltech may have just discovered the first-ever superkilonova, a cosmic phenomenon in which a star explodes twice in violently different ways. Their analysis of a series of ...