sentences:  However, the artifacts in "Sentinel" and "Odyssey" are speculated on in-story (in "Sentinel") or explicitly stated (in the novel version of "Odyssey") as being set as a warning to the alien race that humans were in space.Early drafts of the "2001" novel did include the moon Jupiter V as the location where the Star Gate was located, instead of on Iapetus as in the final version of the novel, with revelation that Jupiter V had been artificially sculpted and placed into its precise orbit by the builders of the Star Gate.