The Hitchhiker’s Guide to the Galaxy is actually "a trilogy in five parts" and the first book’s name is the same as the whole trilogy’s: The Hitchhiker 's Guide to the Galaxy. The Hitchhiker’s Guide to the Galaxy is a science fiction parody. The other books are called The Restaurant at the End of the Universe; Life, The Universe and Everything; So Long, and Thanks for All the Fish and Mostly Harmless. Originally it was a radio show broadcasted on BBC Radio. Its creator Douglas Adams wrote the first book in 1979. When the Earth is destroyed by the Vogons, Arthur Dent and his friend Ford Prefect, who turns out be an alien, are saved by the crew of a stolen spaceship called the Heart of Gold. Arthur and Ford travel in the galaxy and visit the legendary planet Magrathea, with the President of the Galaxy and Ford’s semi-half-cousin, Zaphod Beeblebrox; another human, Trillian McMillan and the ship’s robot, Marvin. In the novel, there’s a book called exactly the same as the novel itself, The Hitchhiker’s Guide to the Galaxy. It’s an encyclopedia, a guide book for hitchhikers all over the galaxy. With the guide’s help Arthur and the reader learn about the Babel fish and why carrying a towel is so important for an example. The biggest theme in the novel is social criticism. It also makes fun of philosophy and religion. Arthur Dent’s house is demolished because of a bypass. The same thing happens to the Earth: The whole planet is destroyed in less than two minutes to make way for a