Interplanetary spaceflight is also called interplanetary transport.
Any crewed interplanetary flight must include certain design requirements
  It is 55 m (180 ft)-long, 9 m (30 ft)-diameter at its widest point, and is capable of transporting up to 100 tonnes (220,000 lb) of cargo and passengers per trip to Mars, with on-orbit propellant refill before the interplanetary part of the journey

