Five Things About Radiation Donuts (VIDEO)
Caption
Earth is surrounded by giant, donut-shaped clouds of radiation. These are the Van Allen Belts. The wild particles trapped here can affect our technology and astronauts that pass through this region -- so we've sent twin spacecraft to study them. Here are five things to know! Watch on YouTube: https://www.youtube.com/watch?v=GNXsZEvhy9I Download in HD: https://svs.gsfc.nasa.gov/13148
Credit
NASA's Goddard Space Flight Center
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