Program 20 consists of four exciting segments. In the "Behind the Scenes" segment, viewers will learn about the new Mars Reconnaissance Orbiter; in the "Tech Watch" segment, viewers will learn about a new type medical device that will give Doctors a form of X-Ray vision; in the "Retrospective" segment viewers find out how the Space Shuttle program was started; and viewers find out about sonic booms in the "How it works" segment.