Fig. 6From: Dynamics of the terrestrial radiation belts: a review of recent results during the VarSITI (Variability of the Sun and Its Terrestrial Impact) era, 2014–2018Photograph of the CeREs (Compact Radiation belt Explorer) CubeSat. CeREs is a typical 3U CubeSat carrying a single instrument, the MERiT (Minaturized Elecgron pRoton Telescope) as the science payloadBack to article page