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spheres
The Synchronized Position Hold, Engage, Reorient Experimental Satellites (SPHERES) experiment is a testbed consisting of three miniaturized satellites that can operate in a variety of environments, including inside the International Space Station (ISS). The MIT Space Systems Laboratory developed the experiment to provide the United States Air Force and NASA with a long term, replenishable, and upgradable testbed for formation flight. It will be used to validate high risk control, metrology, and autonomy technologies. The technologies are critical to the operation of distributed satellite and docking missions such as TechSat21, Starlight, Terrestrial Planet Finder, and Orbital Express. The SPHERES concept was inspired by the Training Remotes from Star Wars used by the Jedi.
== Description ==
To approximate the dynamics presented by these missions, the testbed consists of three miniaturized satellites, microsatellites or "spheres", which can control their relative positions and orientations, and is operable on a 2-D laboratory platform, NASA's KC-135, and the International Space Station. The testbed is being developed jointly by the MIT Space Systems Laboratory and Aurora Flight Sciences (formerly Payload Systems, Inc.), with funding from the Department of Defense and several NASA centers.
The battery-powered, satellites fly within the ISS cabin using carbon dioxide to fuel 12 thrusters.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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