"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 ...

As a result, they detected increased gamma-ray activity from this source, including a strong outburst. The finding is reported in a research paper published on the arXiv preprint server.

Now, this same black hole is once again captivating scientists with an extraordinary gamma-ray flare that’s emitted photons hundreds of billions of times more powerful than visible light.

The 25 ground-based and orbiting telescopes that comprise the EHT saw the outburst as high-energy light called gamma rays. Not only was this the first time M87* had flared since 2010, but the ...

Jamie Carter is an award-winning reporter who covers the night sky. A massive burst of gamma rays produced by the explosion of a star almost two billion light-years away was so powerful that it ...