NASA's Goddard Space Flight Center: The first BARREL balloon of the 2013-2014 season was launched on Dec. 27, 2013. BARREL's job is to help unravel the mysterious radiation belts, two gigantic donuts of particles that surround Earth.
NASA's Goddard Space Flight Center: The first BARREL balloon of the 2013-2014 season was launched on Dec. 27, 2013. BARREL's job is to help unravel the mysterious radiation belts, two gigantic donuts of particles that surround Earth.
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