Dragonfly will send a mobile robotic rotorcraft to Saturn's biggest moon Titan[1] and will make use of Multi-Mission Radioisotope Thermoelectric Generators (MMRTG) for power to navigate through the atmosphere of Titan.[3][11][12] The development cost cap is approximately $1 billion.[13] As of September 2020, Dragonfly is scheduled for launch in 2027.[14]