2001: A Space Odyssey (film) and the 1964 New York World's Fair movie "To the Moon and Beyond", were very influential. According to biographer Vincent Lobrutto, "Universe" was a visual inspiration to Kubrick. The 29-minute film, which had also proved popular at NASA for its realistic portrayal of outer space, achieved "the standard of dynamic visionary realism that he was looking for." Wally Gentleman, one of the special effects artists on "Universe", worked briefly on "2001". Kubrick also asked "Universe" co-director Colin Low about animation camerawork, with Low recommending British mathematician Brian Salt, with whom Low and Roman Kroitor had previously worked on the 1957
2001: A Space Odyssey (novel) trying to tell us something?" Clarke himself directly addressed the spelling issue in chapter 19 of "The Lost Worlds of 2001", explaining that he simply (and unconsciously) used the spelling he was familiar with from "The Conquest of Space" (1949) by Willy Ley and Chesley Bonestell, presuming that the "J" form is the German rendering of the Greek. The film "2010" was released in 1984 resulting in movie tie-in editions of both the "2001" and "2010" novels. At the time Signet Books reported that over 2.8 million copies of "2001" were in print and that "2010" was one of 1983's