The Hitchhiker's Guide to the Galaxy a human-like alien writer for the eccentric, electronic travel guide "The Hitchhiker's Guide to the Galaxy", by hitchhiking onto a passing Vogon spacecraft. Following his rescue, Dent explores the galaxy with Prefect and encounters Trillian, another human who had been taken from Earth prior to its destruction by the President of the Galaxy, the two-headed Zaphod Beeblebrox, and the depressed Marvin, the Paranoid Android. Certain narrative details were changed between the various adaptations. The various versions follow the same basic plot but they are in many places mutually contradictory, as Adams rewrote the story substantially for each new adaptation. Throughout
The Hitchhiker's Guide to the Galaxy the stars, he thought it would be a good idea for someone to write a hitchhiker's guide to the galaxy as well. However, he later claimed that he had told this story so many times that he had forgotten the incident itself, and only remembered himself telling the story. His friends are quoted as saying that Adams mentioned the idea of "hitch-hiking around the galaxy" to them while on holiday in Greece in 1973. Adams's fictional "Guide" is an electronic guidebook to the entire universe, originally published by Megadodo Publications, one of the great publishing houses of Ursa Minor Beta.