Exploring The World's Protected Areas from Space | NASA

How Do Active Volcanoes Change Clouds? | NASA

America's First Spacewalker, Astronaut Edward White, Readies for Gemini IV Liftoff

Why is the Earth's Ozone Hole Getting Smaller? | NASA

NASA Orion Spacecraft Attached to Delta IV Heavy Rocket

NASA X-24B Lifting Body Supersonic Aircraft in Flight

NASA X-23B - 24B Experimental Aircraft [VIDEO]

Rosetta: Elation and woe of Philae comet landing | BBC

Rosetta orbiting around Comet 67P | European Space Agency

"Our lander’s asleep" | ESA Rosetta Comet Mission

Philae comet lander Control Center just before hibernation | DLR

Science is ‘bonus’ after ambitious, but bouncy, comet landing

Anchor failure puts Philae comet lander in a precarious position

Pioneering Philae completes main mission before hibernation

NASA Astronauts Buzz Aldrin & Jim Lovell on Deck | Gemini 12

NASA X-24B on Lakebed in Edwards, California