The Daedalus crew battles across the harsh Martian terrain to reach their prebuilt base camp. A race against the clock to reach the safety of camp begins when the ship commander reveals he has been injured during landing. In the present-day documentary, NASA astronaut Scott Kelly undergoes a historic yearlong mission on the International Space Station, revealing both the physical and emotional hardships astronauts face for space exploration.

Originally released by National Geographic Digital Media, 2016. Streaming video file encoded with permission for digital streaming by Infobase on May 17, 2017.

Grounded—Recap and Introdcution (2:09); --2033: Race to the Base (4:48); -- 2016: Living in Space (3:18); -- 2033: Who is Ben Sawyer? (4:11); -- 2016: Surviving Extreme Conditions (2:26); -- 2033: EVA on Mars (5:05); -- 2016: Astronauts and Families (1:37); -- 2033: In the Dark (4:13); -- 2033: Sense of Scale (4:44); -- 2016: Living and Sacrificing in Space (7:31); -- 2033: Sacrifice and Courage (6:02);.