1:20 How Giant Lava Caves on Earth May Help Us Survive on Mars | National Geographic National Geographic
4:18 Will This More Affordable Rocket Ship Take You to Space One Day? | Short Film Showcase National Geographic
2:02 Watch: Spacecraft's Final Mission Will Get Closest Look at Saturn Ever | National Geographic National Geographic
5:03 Remembering John Glenn: See Footage of His Legendary First Orbit of the Earth | National Geographic National Geographic
0:43 Astronaut Bling: Why Gold Goes to Space on Every Mission | National Geographic National Geographic
5:16 What Did This Cosmonaut Miss About Earth After a Year in Space? | National Geographic National Geographic
1:07 How Do Astronauts Stay Hydrated? Pee ... and Other Space Food Facts | National Geographic National Geographic
2:33 Hear What Space Is Like From NASA's Most Traveled Astronaut | National Geographic National Geographic
3:43 NASA to Make Contact With Asteroid That Could Threaten Earth | National Geographic National Geographic
