The UFO is a large spacecraft of unknown origin which brought The Thing to planet Earth circa 100,000 years ago. It first appeared in the 1982 film The Thing and was further explored in its 2011 prequel, as well as the 2002 video-game.
The UFO crashed in Antarctica 100,000 years ago, and became buried under several millenia's worth of ice and snow. The UFO is first seen in the opening credits entering Earth's atmosphere, in such a disoriented manner that it is implied that it was not even attempting to land, but had completely lost control, possibly due to the actions of The Thing on board. The Thing crawled out of the ship a short distance, but was unable to withstand the harsh cold weather and subsequently froze. It was buried in ice along with the UFO, only to be discovered in the modern day.
During the winter of 1982, a Norwegian crew discovered the UFO buried in the ice near their outpost and the frozen remains of the assumed passenger of the spacecraft. A simple lab test on the remains of the unknown creature resulted in its revival from its long slumber, killing off the crew one by one and assimilated them, causing chaos. The creature mutated into grotesque monstrosities, and the crew were able to fend them off by killing them with fire. In a dire situation, the crew did its best and destroyed most of the camp in hopes of killing the creature, however the creature survived (now imitating an Alaskan Malamute) and fled from the remains of the outpost.
Two survivors pursued the creature by helicopter to stop it once and for all, however both survivors were killed before they succeeded in killing it. The creature was then found by the crew of a nearby American outpost, who would later suffer the same fate. Like before, the creature began to assimilate the crew, causing paranoia among the men. The creature tried to build a miniature UFO out of parts salvaged from the base's helicopter and tractor, but the survivors destroyed the UFO, and the creature.
- The miniature model UFO built for The Thing (1982) was built by model-maker Susan Turner and was constructed principally of ABS plastic in order to avoid problems with heat generated by its 144 circling lights. The model had numerous brass-etched pieces and was airbrush painted by hand.
- In the original film, the US scientists watch the Norwegians' videotapes where it shows them plant thermite charges to blow up the top of the ice covering the ship. However, in the prequel, the Norwegians build an ice tunnel to access the ship that is still beneath the ice and shows nothing of them planting the charges that blew up the ice, and that the top of the ice melted when the Thing tried to escape in the ship. The director commented that he found it unbelievable that the Norwegians could blow up the amount of ice surrounding that large of a ship.
- There are many theories that have been commented by the fans regarding the UFO whether or not it was actually constructed by the Thing or that it belonged to one of the Thing's previous hosts before heading towards Earth. The latter was planned to be true in the unproduced mini-series, Return of the Thing.
- Theory 1 - The first idea would imply that the ship belonged to the Thing’s own race. As such, the Things' were the ones who built and piloted the vehicle. For whatever reason, not many fans seem drawn to this notion. They tend to gravitate towards the more sinister possibilities. However, it is interesting to note that Susan Turner, who originally built the saucer model, makes an off-the-cuff remark on the DVD’s Terror Takes Shape documentary. There, she refers to the saucer’s central dome as the place “where presumably the creature is steering the ship.” What supports this theory is that one of the things, an infected Blair, to be specific, was building a small UFO under the ice.
- Theory 2 - The second notion, that of the Thing being one of the ship’s passengers, is even less popular. For whatever reason, no one has seriously defended this option. Perhaps it’s because people find it difficult to imagine the Thing as just a harmless passenger sitting in an interstellar "cruise liner" of sorts, comfortably sharing its cabin area with other space-going races. Given that the Thing has shown considerable intelligence, as well as the fact that other alien races could easily be immune to it (like silicone-based life forms), this theory is not at all unlikely.
- Theory 3 - The idea of a stowaway or contaminating Thing attacking the flying saucers original crew seems to be the most attractive among the film’s fans. Perhaps the ship visited other places before coming to our solar system, and on one of those planets, it inadvertently picked up a Thing. By assimilating one of it's crew or passengers it may have gained knowledge on flying the spacecraft. The Things ability to refer to a collective memory of the past organisms it consumed would also explain how the Blair-thing knew how to assemble a spacecraft.
- Theory 4 - Surprisingly enough, the fourth possibility, of having the Thing as part of the ship’s cargo or equipment, is not without its supporters. Perhaps the ship was on a scientific expedition, gathering specimens from other star systems, and The Thing would then have been collected from its own home world. Or, even more: what if The Thing was part of the ship’s armament? The idea here, is that The Thing was a biological weapon, created by the race that built and operated the ship. The craft may very well have been a military vessel, equipped with The Thing as part of it's standard weaponry. Earth itself, may have become a target for planetary invasion. But, as with all biological weapons, the creation would ultimately turn against the creators.
- The 2011 prequel somehow supports the fourth possibility and chose to show that the ship was not constructed by the Thing itself, but was the ship of it's previous hosts. The sequences involving the ship, were subjected to "drastic" cuts, as the studio increasingly pressured for a "leaner and meaner" film, thus cutting many of the tension-building and exposition scenes. A full animatronic prop was even built for the alien pilots of the ship, but this sequence was cut - though it appears in behind-the-scenes featurettes. In various interviews, the cast & crew explained that there were scenes on the ship showing containers, or chambers, which The Thing had broken out of - these also do not appear in the final cut of the film. The implication was that the aliens were picking up animals from many different planets as part of a zoological study, and The Thing was brought aboard without anyone realizing its true nature. Other descriptions of these unfinished scenes lean more towards the position that it was a biological weapon, created by the aliens themselves, that somehow broke out of its transport container.