However, after reaching an altitude of 5,300 meters, Hess unveiled a natural source of high-energy particles from space. Today, we call those particles cosmic rays. Detecting these high energy ...

Ultra-high energy cosmic rays are orders of magnitude more powerful than the sun's energetic particles: They can reach up to 10 20 electron volts, whereas particles from the sun can reach up to 10 ...

New theory proposes a cosmic 'off switch' Scientists claim to find 'first observational evidence supporting string theory,' which could finally reveal the nature of dark energy "Type Ia supernovae ...