Planetary scientists claim to have for the first time spotted a thin band of anti-matter particles, called anti-protons, enveloping the Earth.
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The find, described in Astrophysical Journal Letters, confirms theoretical work that predicted the Earth's magnetic field could trap antimatter.

A team of more than 60 researchers identified signs of antiprotons in the Van Allen belt using data from the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (Pamela) satellite.

The team says a small number of antiprotons lie between the Van Allen belts of trapped "normal" matter.

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.

The discovery could help manking to explore the stars, with some researchers believing that the belt of antimatter could be used as a source of fuel.

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