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Van Allen Probes
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NASA launched the Van Allen Probes on August 30, 2012 for a prime mission of two years.

Identical sets of suites of five instruments were integrated on a pair of APL-built, sun-pointing spacecraft with a perigee altitude of approximately 500 kilometers (approximately 311 miles) and an apogee altitude of approximately 30,600 kilometers (approximately 19,014 miles). Inclination will be no greater than 18 degrees.

The two spacecraft will fly in nearly identical eccentric orbits that cover the entire radiation belt region, lapping each other several times over the course of the mission.

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

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