Pioneer 3 reached an altitude of 63,000 miles (101,000 km), and Van Allen's instruments revealed a second, outer radiation belt
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Pioneer 3 reached an altitude of 63,000 miles (101,000 km), and Van Allen's instruments revealed a second, outer radiation belt
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-18 from Wikipedia. The archived copy is preserved so this citation survives link rot.