Chances are, you are watching this program by satellite, one way or another. Every day we use these wonders of human design, from communication and weather observation, to GPS and recourse management. As time goes on, the need for these amazing machines grows and grows.

Air, water, food, electricity, and fuel - all the essentials to explore the solar system. This episode explores the innovative plans for astronauts to grow their own food and extract water and fuel at their destinations.