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Nanosatellite
Also known as EQUilibriUm Lunar-Earth point 6U Spacecraft
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3 identifiers linking EQUULEUS across the web's reference databases
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EQUULEUS was a nanosatellite of the 6U CubeSat format that measured the distribution of plasma that surrounds the Earth (plasmasphere) to help scientists understand the radiation environment in that region. It also demonstrated low-thrust trajectory control techniques, such as multiple lunar flybys, within the Earth-Moon region using water steam as propellant. The spacecraft was designed and developed jointly by the Japan Aerospace Exploration Agency (JAXA) and the University of Tokyo.