WBUR News

Support the news

A Natural Particle Accelerator, Far Above The Planet13:48

Play

In 1958, James Van Allen described two belts of radiation that surround Earth. Daniel Baker says that when a satellite was launched to study the belts in 2012, it saw a third belt form, which lasted for about a month before being blasted away by an interplanetary shock wave.

+Join the discussion
Share

Support the news

Next Up

Where to now?

More NPR or Explore Audio.