The uncrewed Dragon capsule was captured by astronauts using the space station's robotic arm at 5:57 a.m. EST (1057 GMT) as both spacecraft sailed 252 miles (405 kilometers) above the Pacific Ocean, between Australia and Papua New Guinea. [See photos for the Dragon cargo ship launch]
"It's a great day to see Dragon back on ISS again," spacecraft communicator Leslie Ringo radioed the International Space Station (ISS) crew from NASA's Mission Control Center in Houston. SpaceX launched the Dragon capsule Friday (Dec. 15).
"It's a beautiful spacecraft and we're looking forward to digging into it and getting some science on board," astronaut Joe Acaba of NASA replied from the station. Acaba assisted crewmate Mark Vande Hei, who controlled the station's arm during the Dragon capture.
Sunday's arrival marked the second cargo delivery mission for this SpaceX Dragon capsule. It last visited the station in April 2015. SpaceX also reused the first stage of the Falcon 9 rocket that launched the Dragon, with the booster landing on a pad to mark the company's 20th successful landing. SpaceX has developed its reusable rocket technology to lower the cost of spaceflight.
For this mission, SpaceX's 13th station resupply flight for NASA, the Dragon delivered nearly 4,800 lbs. (2,177 kilograms) of supplies and scientific gear for astronauts on the space station. Dragon will stay at the space station until mid-January, when it will return to Earth and splash down in the Pacific Ocean off the coast of Baja California, allowing SpaceX and NASA to recover experiment results and other gear.
Today's Dragon arrival capped a busy day for the International Space Station. Just hours earlier, at 2:21 a.m. EST (0721 GMT), a Russian Soyuz rocket launched three new crewmembers toward the orbiting lab from Baikonur Cosmodrome in Kazakhstan.
Russian cosmonaut Anton Shkaplerov, Norishige "Neemo" Kanai of the Japan Aerospace Exploration Agency (JAXA) and astronaut Scott "Maker" Tingle of NASA launched aboard a Soyuz space capsule and will join the station's Expedition 54 crew later this week. The trio is scheduled to dock at the space station early Tuesday (Dec. 19) at 3:43 a.m. EST (0843 GMT).