
VANDENBERG AIR FORCE BASE, Calif. -- Stage 0 of the Taurus XL launch vehicle for the Orbiting Carbon Observatory arrives at complex 576E at Vandenberg Air Force Base in California. It will be mated with stages 1, 2 and 3 for the launch of OCO. The OCO is a new Earth-orbiting mission sponsored by NASA's Earth System Science Pathfinder Program. It is scheduled to launch Feb. 23. Photo credit: NASA/Randy Beaudoin, VAFB

VANDENBERG AIR FORCE BASE, Calif. -- At complex 576E at Vandenberg Air Force Base in California, a crane lifts Stage 0 of the Taurus XL launch vehicle for the Orbiting Carbon Observatory from its transporter. The OCO is a new Earth-orbiting mission sponsored by NASA's Earth System Science Pathfinder Program. It is scheduled to launch Feb. 23. Photo credit: NASA/Randy Beaudoin, VAFB

VANDENBERG AIR FORCE BASE, Calif. -- Stage 0 of the Taurus XL launch vehicle for the Orbiting Carbon Observatory arrives at complex 576E at Vandenberg Air Force Base in California. It will be mated with stages 1, 2 and 3 for the launch of OCO. The OCO is a new Earth-orbiting mission sponsored by NASA's Earth System Science Pathfinder Program. It is scheduled to launch Feb. 23. Photo credit: NASA/Randy Beaudoin, VAFB

VANDENBERG AIR FORCE BASE, Calif. -- At complex 576E at Vandenberg Air Force Base in California, a crane raises Stage 0 of the Taurus XL launch vehicle for the Orbiting Carbon Observatory from its transporter. The OCO is a new Earth-orbiting mission sponsored by NASA's Earth System Science Pathfinder Program. It is scheduled to launch Feb. 23. Photo credit: NASA/Randy Beaudoin, VAFB

VANDENBERG AIR FORCE BASE, Calif. -- The avionics are mated to stage 2 of the Taurus XL launch vehicle for the Orbiting Carbon Observatory at Vandenberg Air Force Base in California. The OCO is a new Earth-orbiting mission sponsored by NASA's Earth System Science Pathfinder Program. The launch of OCO is scheduled for Feb. 23. Photo credit: NASA/VAFB

VANDENBERG AIR FORCE BASE, Calif. -- At complex 576E at Vandenberg Air Force Base in California, a crane lifts Stage 0 of the Taurus XL launch vehicle for the Orbiting Carbon Observatory from its transporter. The OCO is a new Earth-orbiting mission sponsored by NASA's Earth System Science Pathfinder Program. It is scheduled to launch Feb. 23. Photo credit: NASA/Randy Beaudoin, VAFB

VANDENBERG AIR FORCE BASE, Calif. -- At complex 576E at Vandenberg Air Force Base in California, a crane lifts Stage 0 of the Taurus XL launch vehicle for the Orbiting Carbon Observatory from its transporter. The OCO is a new Earth-orbiting mission sponsored by NASA's Earth System Science Pathfinder Program. It is scheduled to launch Feb. 23. Photo credit: NASA/Randy Beaudoin, VAFB