Two giant black holes causing strange flashes of light about one billion light years away from Earth have been detected by ...

Astronomers have stumbled upon a pair of massive black holes in a distant galaxy that are triggering unusual bursts of light ...

The Universe began in a burst of light nearly 14 billion years ago, but as it expanded and cooled, darkness set in. Today, ...

A massive burst of gamma rays produced by the explosion of a star almost two billion light-years away was so powerful that it changed Earth’s atmosphere, according to scientists. Gamma rays are ...

On September 14, Fermi observed what's known as a gamma ray burst, a flash of the most energetic type of light in the electromagnetic spectrum, radiating from the same neighborhood as the black ...

We see this light as a delayed "echo" of the original light burst. Unlike most gravitational lenses, which magnify the light of more distant objects, in this case the light echo is de-magnified ...

IDAHO FALLS, Idaho (KIFI) - A bright light lit up the sky over Idaho, Montana, Washington and other regions early Wednesday ...

"The gamma-ray burst traveled through intergalactic space at the speed of light for eleven billion years, during which time the Sun and the planets were born." — Timothy Ferris, in the film ...

Researchers have discovered the cause of the brightest burst of light ever recorded. But in doing so they have run up against two bigger mysteries, including one that casts doubt on where our ...