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THEMIS mission fields 5 probes to solve mystery of auroral substorms

Substorms in the Earth's magnetosphere turn the shimmering Northern and Southern lights into a dancing light show. A new NASA mission called THEMIS, designed and built by UC Berkeley scientists and scheduled for a February 15 launch from Cape Canaveral, will field five probes that will lurk in Earth's shadow to determine where and how these substorms are triggered.

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