Astronomers may have finally solved one of the weirdest mysteries of our night sky: why Betelgeuse, a massive star in the constellation Orion, seems to fade and brig ...

Kepler's supernova remnant is extremely exciting for astronomers – a rare example of a supernova for which we have a clear ...

Play Video A new video shows changes in Kepler’s Supernova Remnant using data from NASA’s Chandra X-ray Observatory captured ...

Black holes are not cosmic vacuum cleaners, but they are among the universe’s most extreme objects - born from collapsing ...

KEY OBSERVATIONS Light from a dead star exploded ten billion years ago, yet it reached Earth not once, but several times, ...

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

We discovered what we think is a black hole merging with a massive companion star, shredding it into a disk that feeds the black hole. It’s a rare and awe-inspiring phenomenon,” said Daniel Perley, ...

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

On Wednesday evening, former Google CEO Eric Schmidt and his wife, Wendy, announced a major investment in not just one ...

The expansion of Kepler's Supernova Remnant over the past 25 years is summed up in 40 seconds in a new video released by NASA ...

Decades in the making, NASA's X-ray timelapse shows a stellar explosion expanding into space at up to 2% the speed of light.