They then reawaken Kennedy, who must regain his strength to perform the landing-and then decide that the only way they can land is to abandon the original mission profile calling for a Martian orbital capture, and instead dive straight down to the Martian surface.
The last scene is a set-up for the sequel: Bob, who is now enamored of Valkerie, proposes marriage to her before a worldwide six-billion-strong television audience that has tuned into watch "the first two astronauts to walk on Mars." .