>>10981738Keeping the International Space Station oriented. Left to its orbit, the station would rotate. To counter this there are linear angular momentum machines that use spinning cryomagnets that are not connected to the ship at all inside an array of electromagnets As the ship needs to move to orient itself, the angular momentum of the spinning magnets is quickly bled off as a torque to move the ship. Then the magnets are slowly spun up again. Since the cryomagnets are not connected, no precedence is transferred to the ship. In this way they don't need fuel to orient the ship. They just use the electricity from the solar panels.
