In most shots the planet has a blue appearance. In one shot of the Big Screen (and a "this episode" clip), the planet has a red-white mottled colour.
As the Eagle enters the atmosphere, the camera moves up and down in the cockpit, simulating turbulence. When the scene cuts to the passenger module, the camera is still. Thanks to David Bobzien.
Male and female Thulians have different tolerance of temperature. While Thulian men wear thick sheepskins inside the ice caves, Thulian women expose a lot of bare flesh. By definition, the temperature around the ice walls must be below freezing, although the centre around a fire can be comfortably warm.
When Rowland wakes up to silence the radio, the side light panels in the main hall are out. In the corridor leading up to the communications room they are fully lit.
Notice the wooden beam at the top of frame, holding up a painted white board. It is possible the Thulians use wood as well as ice to construct their dwellings.
The Alphan ski goggles display the large brand name "UVEX XX" on the head band. Uvex is a top German manufacturer of sports glasses.
As Koenig walks up to his desk at the end, the studio lights can be seen at the frame (this is only visible on the 2004 remastered image).
Copyright Martin Willey