NASA's Orbiting Carbon Observatory-2 mission is underway. Launched from California's Vandenberg Air Force Base, OCO-2 will help track our impact on the amount of carbon dioxide in the atmosphere and help us better understand the various human-made and natural sources of CO-2. This is one of five Earth-observing missions scheduled in 2014 -- the most Earth-focused missions launched in a single year, in more than a decade. Also, Saucer-shaped vehicle tested, Cygnus Orb-2 launch update, Space Launch System model tests and 10 years exploring Saturn.
Credit: NASA
