Screenwriter Clive Dawson tried to be faithful to the original short story by Sydney J. Bounds, "The Animators". However, in the story, the crew is composed of six men. For the adaptation, Dawson added two new characters and wrote some of them as female characters.
Ruairi Robinson stated that as a first time director, to get to work with a cast of that caliber was amazing. On the casting process, he commented that he "sort of picked cast members that never normally do this kind of film. They all do serious proper movies". He also said that he "liked the idea of putting people who would never normally do Sci-Fi stuff into a Sci-Fi movie, because they are going to take it seriously then and people are going to take them seriously".
When Vincent Campbell confronts astronaut Robert Irwin, he opens the door to cockpit and leaves it open. As the scene progresses, the door is closed as he falls against it.It is closed before Irwin engages the boosters- so it did not close from launch-related forces.
Vincent Campbell: There's a pretty good chance I'm infected too. If that's the case, I've got just enough fuel left to drop out of orbit and burn up in the atmosphere. At least it'll be quick. You should get this in about 15 minutes, so, uh, I guess I'll be waiting. Five eleven Zulu, Aurora lander out.