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Music

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David Sibeck: The goals of the mission are to determine where the charged particles

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in the Earths radiation belts come from? How they get energized?

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And how they're lost into space? Each of the two spacecraft

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carries five instrument suites, and a total of eight instruments.

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The two spacecraft are identical. One of the instrument suites on

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the spacecraft is the ECT suite. And this instrument

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suite consists of a set of instruments. The HOPE instrument measures the

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coldest plasma in the Earth's radiation environment. MagEIS, measures

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intermediate energy; ions and electrons. Next instrument up

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is REPT and it measures still higher particles. The RBSPICE instrument

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measures ring current particles and their composition. The wind

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current is a region of charged particles around the Earth that greatly affects

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the Earth's magnetic field. The RPS instrument

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measures the radioactive particles in the inner radiation belt.

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The EFW instrument measures the electric field.

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And it spectacularly consists of very long wires that extend

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40 to 50 meters out from the spacecraft with little

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balls on the end that measure the sensitive electric field in space.

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The EMFISIS instrument suite comprises two instruments.

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A magnetometer out on a boom, that measures the ambient magnetic

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field out in space and a search coil magnetometer that measures

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wave activity in the magnetic field. I'm excited about this mission

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because it's going to provide answers to questions that we've been asking a long time;

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about where the particles come from in the Earths radiation belts? What charges

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them up? And what causes them to move around? I've been wondering about this a long

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time, and I'm ready to learn the answer.