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Van Allen Probes
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Spacecraft Instruments

The Johns Hopkins University Applied Physics Laboratory built and operates the twin Van Allen Probes spacecraft for NASA’s Living With a Star program.

The Van Allen Probes operate entirely within the radiation belts throughout their mission. When intense space weather occurs and the density and energy of particles within the belts increases, the probes do have the luxury of going into a safe mode, as many other spacecraft must do during storms. The spacecraft engineers designed probes and instruments that are “hardened” to continue working even in the harshest conditions.

The twin probes carry a number of instruments and instrument suites to support five experiments that will address the mission's science objectives. Because it is vital that the two craft make identical measurements to observe changes in the radiation belts through both space and time, each probe carries the following:

Labeled Instrument Diagram

Click to visit the NASA web site. Click to visit the APL web site.

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