An "Impenetrable Barrier" Protects The Earth From Killer Electrons

It appears that our planet's built-in force field is much stronger than we thought. Scientists studying the Van Allen belts have discovered the presence of a nearly impenetrable barrier that prevents some of the fastest and most powerful "ultrarelativistic" electrons from reaching the surface. » 11/27/14 1:00pm 11/27/14 1:00pm

Thin belt of antimatter discovered above Earth

Cosmic rays bring our planet a steady stream of protons, electrons, and other particles. As these collide with nuclei in the upper atmosphere, they create new particles, including antiprotons. And some of this antimatter is sticking around above our world. » 8/07/11 9:00am 8/07/11 9:00am

Balloons over Antarctica aim to solve space radiation mystery

Earth is surrounded by two huge regions of charged particles like protons and electrons, and these areas are known as the Van Allen radiation belts. These belts can mysteriously change their intensity, posing a threat to astronauts and sensitive electronics. » 3/20/11 2:15pm 3/20/11 2:15pm