It is December 2034. A spacecraft launched from Earth in July 2028, enters Titan's atmosphere at 5km/s. Around 2 hours later, it softly lands on the surface at less than 1m /s. Over the next three years, NASA's Dragonfly mission, a rotorcraft the size of a small car, will chemically analyse the Titan's atmosphere, ground and a little of its subsurface. It's called Dragonfly