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Index/Topics/Van Allen Probes

Van Allen Probes

The use of probes to study Van Allen belt dynamics and refine models of particle acceleration and loss.

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Jan 15, 2026
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How strong is the radiation in the Van Allen belts compared to low Earth orbit and deep space?

The Van Allen radiation belts are regions of trapped energetic charged particles whose local intensities can be orders of magnitude higher than the typical background encountered in low Earth orbit (L...

Jan 31, 2026
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How do spacecraft and astronauts protect against radiation when crossing the Van Allen belts?

Spacecraft and crews manage radiation with a three-pronged strategy: avoid the worst of it by smart trajectories and timing, ride inside to stop many particle types, and limit exposure with mission ru...