This was achieved using TRACERS, NASA's twin satellites to sample and analyze high-energy electrons.

Add Yahoo as a preferred source to see more of our stories on Google. The ancient Greeks conceived of five building blocks of matter – from bottom to top: earth, water, air, fire and aether. Aether ...

How many kinds of elementary particles should I say there are? In experiments at the Large Hadron Collider, physicists smash ...

Illustration of an array of ground-based detectors to characterize a cosmic ray shower. When high-energy cosmic particles strike the atmosphere, they produce a cascade of particles. By building a ...

For decades, scientists have been trying to solve a vexing problem regarding the weather in outer space: At unpredictable times, high-energy particles bombard the Earth and objects outside the Earth's ...

Astrophysicists show how and when specific particles form and offers clues to questions that have troubled scientists since the 1940s. For decades, scientists have been trying to solve a vexing ...