The island of Gran Canaria, Spain, where the locations are filmed, is often referred to as a 'miniature continent' because of the diverse nature of its landscapes and habitats. In fact, the entire western half of the island is a UNESCO Biosphere Reserve,
The Spanish Army took part in the film with 100 soldiers and 20 vehicles. It's the first participation of the Spanish Army in an international film.
The basic premise resembles Clifford Simak's 1944 short story "Desertion," in which military volunteers are physiologically converted to adapt them to the conditions of Jupiter so as to colonize the planet.
In the scene at around 44 mins where Rick and Abi are in bed there is a musical reference to the 1st movement of Gustav Mahler's Symphony No.1 in D Major, known as "The Titan"
The locations of The Titan belong to the island of Gran Canaria, Spain. It took eight weeks to shoot all the scenes. The crew filmed in different locations and they were assisted by the Spanish Airforce in some of them.