 The maximum launch payload mass is 6,000 kg (13,228 lbs) with a maximum return mass of 3,000 kg (6,614 lbs), along with a maximum launch payload volume of 25m^3 (883 ft^3) and a maximum return payload volume of 11m^3 (388 ft^3).The maximum endurance of the Dragon in space is two years.In 2012 the SpaceX Dragon made history by becoming the first commercial robotic spacecraft to deliver cargo to the International Space Station and to safely return cargo to Earth in the same trip, something previously achieved only by governments.