The Hitchhiker's Guide to the Galaxy: The Original Radio Scripts contains a new introduction by Geoffrey Perkins, and newly researched material by M. J. Simpson, including a transcript of "The Lost Hitchhiker Sketch." The sketch was an interview with Simon Jones in character as Arthur Dent, conducted by Sheila Steafel on her show "Steafel Plus" in 1982, written entirely by Adams. The sketch can be heard in the "Douglas Adams at the BBC" CD collection. The book now contains transcripts of all Hitchhikers radio sketches, barring a sketch for Marvin that Adams wrote for the BBC Radio 1 show Studio B15 to promote the television version of the serial, which
Places in The Hitchhiker's Guide to the Galaxy member of the Alpha Centauri system. The first novel points out that it is four light years from Earth's solar system to Alpha Proxima, whilst Damogran is five hundred thousand light years away. The Altairian dollar is one of three freely convertible currencies in the galaxy, though by the time of the novels it had apparently recently collapsed. The "Hitchhiker's Guide to the Galaxy" advertises itself as the best resource for those who wish "to see the galaxy for less than thirty Altairian dollars a day". According to the Hitchhiker's Guide TV series, one Altairian "long way" is equal to