Image: The antiprotons lie sandwiched between the inner and outer Van Allen belts (in red) around the Earth.

Antimatter Belt Around Earth Discovered By Pamela Craft -- BBC

A thin band of antimatter particles called antiprotons enveloping the Earth has been spotted for the first time.

The find, described in Astrophysical Journal Letters, confirms theoretical work that predicted the Earth's magnetic field could trap antimatter.

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

The researchers say there may be enough to implement a scheme using antimatter to fuel future spacecraft.

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