NASA probes studying Earth's radiation belts to celebrate two year anniversary
Monday, September 1, 2014 - 06:30
in Astronomy & Space
(Phys.org) —NASA's twin Van Allen Probes will celebrate on Saturday two years of studying the sun's influence on our planet and near-Earth space. The probes, shortly after launch in August 2012, discovered a third radiation belt around Earth when only two had previously been detected.