A trio of photons emitted seven billion years ago from a gamma ray burst threaten to scrap decades of research by theoretical physicists.

Gamma rays can only be detected by sensors made of dense metals and takes over six feet (1.8 meters) of concrete to block. Gamma rays are high-energy photons produced by some of the most violent ...

For the first time, researchers have seen how light behaves during a mysterious phenomenon called 'imaginary time'.

Exceptionally powerful X-ray jets have been detected emanating from two supermassive black holes. These cosmic structures date back to a time when the Universe was still young. These discoveries, ...

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.

A microquasar belonging to our Milky Way galaxy has set records by generating cosmic rays with energy levels never before ...

What is even more peculiar about this ultra-energetic light is that it is separate from the other gamma-ray emissions, suggesting that the higher-energy photons are not caused by the mechanisms ...

AEROSPACE ENGINEER EUGEN SÄNGER hypothesized in the 1950s that if matter could be completely converted into light particles (called photons), the photons themselves could be a power source to ...

As long as one is sure all the photons, or particles of light, left their source at exactly the same time, ... "But nothing that we know can un-disperse gamma-ray photons," Nemiroff said.