Live coverage: Delta 2 launches

NASA, United Launch Alliance and Air Force officials hold the pre-launch news conference for the Delta 2 rocket with the agency’s SMAP environmental satellite from Vandenberg Air Force Base on Jan. 27.

Russian commander Sergey Ryzhikov, flight engineer Sergey Kud-Sverchkov, and NASA astronaut Kate Rubins climbed into their Soyuz landing craft and undocked from the International Space Station at 9:34 p.m. EDT Friday (0134 GMT Saturday). The trio touched down on the barren steppes of Kazakhstan at 12:56 a.m. EDT (0456 GMT) to wrap up six months in orbit.

Ground crews at Vandenberg Air Force Base in California retracted a mobile gantry away from the Delta 2 rocket Monday afternoon, revealing the 128-foot-tall (39-meter) booster on its launch pad awaiting liftoff with a new polar-orbiting weather observatory.