The film is noted for its scientifically accurate depiction of space flight, pioneering special effects, and ambiguous imagery. Kubrick avoided conventional cinematic and narrative techniques; dialogue is used sparingly, and there are longsequences accompanied only by music. The soundtrack incorporates numerous works of classical music, by composers including Richard Strauss, Johann Strauss II, Aram Khachaturian, andGyörgy Ligeti.
Principal photography began on 29 December 1965, in Stage H at Shepperton Studios, Shepperton, England. The studio was chosen because it could house the 60-by-120-by-60-foot (18 m × 37 m × 18 m) pit for the Tycho crater excavation scene, the first to be shot. In January 1966, the production moved to the smallerMGM-British Studios in Borehamwood, where the live-action and special-effects filming was done, starting with the scenes involving Floyd on the Orion spaceplane; it was described as a "huge throbbing nerve center ... with much thesame frenetic atmosphere as a Cape Kennedy blockhouse during the final stages of Countdown."
"Not one foot of this film was made with computer-generated special effects. Everything you see in this film or saw in this film was done physically or chemically, one way or the other." — KeirDullea (2014).
2001: A Space Odyssey is widely regarded as among the greatest and most influential films ever made. In 1991, it was deemed "culturally, historically, or aesthetically significant" by the United States Library of Congress and selected forpreservation in the National Film Registry. In 2010, it was named the greatest film of all time by The Moving Arts Film Journal.