Last updated on April 18, 2014 at 15:27 EDT
Earths Magnetosphere
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Earth's Magnetosphere

October 31, 2013
Earth is surrounded by a giant magnetic bubble, called the magnetosphere. Over six years in space, five spacecraft from the THEMIS mission have helped map out this area and improve our ability to predict dynamic space weather events – events that at their worst can impact satellites in space. Credit: NASA