Tag: observatory

A cosmic photon with a monstrous energy registered: 1.4 quadrillion electron volts

The Large Alpine Air Showers Observatory in Sichuan in southwestern China reported a photon with the highest energy ever observed, 1.4 petaelectronvolts (1.4 x 1015 eV). Such a discovery could lead to a serious change in the established ideas about our Galaxy, writes the...