A method of refuelling a satellite, comprising: instructing a robotic arm to access a fuel fill valve on a fuel tank on said satellite, characterised by the steps of: transmitting visual images of a region of the satellite containing the fuel fill valve to a teleoperator remote from the satellite, using the visual images to guide the teleoperator to instruct the robotic arm in the steps of: affixing a thermal blanket cutting tool on an end effector, engaging said thermal blanket cutting tool to a thermal blanket encasing said fuel fill valve and cutting an access opening in said thermal blanket, removing the thermal blanket cutting tool and affixing a cap removal tool on said end effector and engaging said cap removal tool to a fuel fill valve outer cap and removing and storing said fuel fill valve outer cap, removing the cap removal tool and affixing a valve tool on said end effector, affixing a valve access cap removal and replacement tool to said valve tool and engaging said valve tool to said fuel fill valve and removing and storing a valve access cap located on said fuel fill valve, removing the valve access cap removal and replacement tool and affixing a fuel-line coupling on said valve tool, attaching the fuel-line coupling to said fuel fill valve, opening said fuel fill valve and refuelling said fuel tank, closing said fuel valve, detaching said fuel-line coupling from said fuel fill valve, removing and storing said fuel-line coupling from said end effector, affixing said valve access cap removal and replacement tool to said valve tool and retrieving and mounting said valve access cap onto said fuel line valve. instructing a robotic arm to access a fuel fill valve on a fuel tank on said satellite, characterised by the steps of: transmitting visual images of a region of the satellite containing the fuel fill valve to a teleoperator remote from the satellite, using the visual images to guide the teleoperator to instruct the robotic arm in the steps of: affixing a thermal blanket cutting tool on an end effector, engaging said thermal blanket cutting tool to a thermal blanket encasing said fuel fill valve and cutting an access opening in said thermal blanket, removing the thermal blanket cutting tool and affixing a cap removal tool on said end effector and engaging said cap removal tool to a fuel fill valve outer cap and removing and storing said fuel fill valve outer cap, removing the cap removal tool and affixing a valve tool on said end effector, affixing a valve access cap removal and replacement tool to said valve tool and engaging said valve tool to said fuel fill valve and removing and storing a valve access cap located on said fuel fill valve, removing the valve access cap removal and replacement tool and affixing a fuel-line coupling on said valve tool, attaching the fuel-line coupling to said fuel fill valve, opening said fuel fill valve and refuelling said fuel tank, closing said fuel valve, detaching said fuel-line coupling from said fuel fill valve, removing and storing said fuel-line coupling from said end effector, affixing said valve access cap removal and replacement tool to said valve tool and retrieving and mounting said valve access cap onto said fuel line valve. affixing a thermal blanket cutting tool on an end effector, engaging said thermal blanket cutting tool to a thermal blanket encasing said fuel fill valve and cutting an access opening in said thermal blanket, removing the thermal blanket cutting tool and affixing a cap removal tool on said end effector and engaging said cap removal tool to a fuel fill valve outer cap and removing and storing said fuel fill valve outer cap, removing the cap removal tool and affixing a valve tool on said end effector, affixing a valve access cap removal and replacement tool to said valve tool and engaging said valve tool to said fuel fill valve and removing and storing a valve access cap located on said fuel fill valve, removing the valve access cap removal and replacement tool and affixing a fuel-line coupling on said valve tool, attaching the fuel-line coupling to said fuel fill valve, opening said fuel fill valve and refuelling said fuel tank, closing said fuel valve, detaching said fuel-line coupling from said fuel fill valve, removing and storing said fuel-line coupling from said end effector, affixing said valve access cap removal and replacement tool to said valve tool and retrieving and mounting said valve access cap onto said fuel line valve.