Video: SpaceX Dragon capsule undocks from International Space Station The unmanned cargo craft has left the ISS after the first successful commercial mission to carry supplies to the astronauts stationed there. Images released by Nasa TV show space crew releasing electronic bolts that connected the capsule to the station for five days. A robotic arm then guides the craft away from the ISS ready to launch towards Earth. Dragon descends towards the Pacific Ocean, hundreds of miles west of East Baja California, through controled propulsion burns conducted in three stages. Mission Control conducts the "first burn" before SpaceX staff take over to orchestrate second and third stages of the ship's return journey to Earth.