Gamma rays are particles of light, or photons, with the highest energy in the universe and are invisible to the human eye. The most common emitters of gamma rays are blazars: supermassive black ...

A team of astronomers has detected a burst of very-high-energy gamma rays that was created over five billion years ago – the oldest such burst ever detected. On their journey to Earth, the gamma rays ...

According to study co-author Daniel Gruen, this correlation suggests that dark matter may be largely responsible for the universe's faint gamma-ray background.

The 'flashlight' could be mounted on a rover to study the lunar surface (Image: Chris Morrison) The Phase 1 study, titled EmberCore Flashlight: Long Distance Lunar Characterisation with Intense ...