The US shuttle Discovery has delivered a large Japanese laboratory to the International Space Station that will give the Asian power a permanent outpost to carry out experiments in space. Mission specialists Mike Fossum and Ron Garan will venture out of the ISS Tuesday on a spacewalk to unlock the lab from the shuttle's payload bay so it can be installed on the orbiting station. Japan Aerospace Exploration Agency astronaut Akihiko Hoshide will then operate the station's robotic arm to remove his country's lab from Discovery's cargo bay and attach it to the ISS. Discovery linked up with the ISS on Monday about 338 kilometers (210 miles) above the south Pacific after a two-day trip around Earth.