The Colorado Student Space Weather Experiment (CSSWE) is an NSF-funded 3U CubeSat (30×10×10 cm) which houses an energetic particle telescope.

Its primary objective is to measure the directional differential flux of Solar Energetic Protons (SEPs) and Earth’s radiation belt electrons.

CSSWE took science data for 153 days after a 22 day commissioning phase, far exceeding the 90 day mission goal.  Last contact occurred on March 7th, 2013, at 15:36 MST.

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