Solar physicists say they have found a key source of intense gamma rays unleashed when Earth's nearest star produces its most ...

Astronomers have traced a high-energy neutrino to its cosmic source for the first time ever, solving a century-old mystery in the process. Neutrinos are nearly massless subatomic particles that have ...

With the help of special telescopes, researchers have observed a cosmic particle accelerator as never before. Observations made with the gamma ray observatory H.E.S.S. in Namibia show for the first ...