THEMIS was successfully launched this evening on a Delta 2 (7925) rocket. All five probes were properly deployed.

Its mission is to impartially distinguish between two disparate phenomenological and plasma-physical models of substorm onset in order to solve a tantalizing mystery: where and when do substorms start in the Earth's magnetosphere?

In short, what's up with the auroras?

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Thanks for the update

You're welcome.

Looking forward to the science data. It should help us understand the magnetosphere and its interactions with external influences a bit better.

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