Two cranes raise NASA's Orbiting Carbon Observatory or OCO spacecraft to vertical for attachment to the waiting Stage 0 motor of the Taurus XL launch vehicle in the tower.

On Launch Complex 576-E at Vandenberg Air Force Base in California, two cranes raise NASA's Orbiting Carbon Observatory, or OCO, spacecraft to vertical for attachment to the waiting Stage 0 motor of the Taurus XL launch vehicle in the tower. The OCO is attached to the upper stack, consisting of Stages 1, 2 and 3 of the Taurus. The spacecraft is scheduled for launch aboard Orbital Sciences' Taurus XL rocket Feb. 24 from Vandenberg. The spacecraft will collect precise global measurements of carbon dioxide (CO2) in the Earth's atmosphere. Scientists will analyze OCO data to improve our understanding of the natural processes and human activities that regulate the abundance and distribution of this important greenhouse gas. Photo credit: NASA/Randy Beaudoin, VAFB