SpaceX has arrived at the International Space Station (ISS), delevering the world's first inflatable tent for astronauts. The US aerospace company's unmanned Dragon cargo ship, carrying lettuce seeds, lab mice and an inflatable pop-up room, arrived on Sunday at the space station where six spacecraft are now docked. British astronaut Tim Peake reached out with the station's robotic arm and grappled the Dragon, carrying its nearly 3,175kg of gear, at 7:23am (11:23 GMT). "It looks like we've caught a Dragon," said Peake. Four Russian spaceships - two Progress cargo carriers and two Soyuz capsules which ferry astronauts - are docked at the space station, along with Orbital ATK's Cygnus cargo ship and SpaceX's Dragon. Not since 2011, during the final flight of the space shuttle Discovery, have there been six vehicles parked at the ISS at the same time, NASA said.

SpaceX has made good on a high-priority delivery: the world's first inflatable room for astronauts. A SpaceX Dragon cargo ship arrived at the International Space Station on Sunday, two days after launching from Cape Canaveral, Florida. Station astronauts used a big robot arm to capture the Dragon, orbiting 260 miles above the Pacific. The Dragon holds 7,000 pounds of freight, including the soft-sided compartment built by Bigelow Aerospace. The pioneering pod -- packed tightly for launch -- should swell to the size of a small bedroom once filled with air. It will be attached to the space station next weekend.