The Long Earth (series)
Cover of The Long Earth, the first book in the series.
|Author||Terry Pratchett & Stephen Baxter|
|Genre||Science fiction novel|
|Publisher||Doubleday and Harper|
|Published||19 June 2012|
|Media type||Print (hardcover & paperback), eBook, and Audio Book|
At the time of Pratchett's death (12 March 2015), three novels had been released, with a fourth published on 23 June 2015 and the fifth published on 30 June 2016.
The original basis for the series was Pratchett's then-unpublished short story "The High Meggas", which he wrote as a starting point for a potential series while his first Discworld novel, The Colour of Magic, was undergoing publication. The success of The Colour of Magic prompted Pratchett to put the story aside in favour of working on The Light Fantastic. The idea resurfaced in the late 2010 following a dinner conversation with his assistant and American agent, and discussion with Stephen Baxter prompted the development of the first book in the series, The Long Earth, and the collaboration between the two authors.
Pratchett and Baxter primarily write in different fields of literature. Baxter has written in fields of 'hard science', evolutionary speculation and alternative history. Although Pratchett has written some science fiction, he is primarily known for his fantasy series of Discworld novels. Although both authors spoke publicly about the outline for the novel, no public readings of any material were given (something which Pratchett frequently did at Discworld conventions).
In 2010, they planned only two books but following the completion of the first draft of the first volume in December 2011, they split it in two, and presented their publishers with a plan for a pentalogy. Pratchett announced on Twitter the completion of the first draft of The Long Earth in December 2011. The book was released in the United States on 19 June 2012. A sequel titled The Long War was released on 20 June 2013, and The Long Mars was published on 17 June 2014. The third sequel The Long Utopia was released on 18 June 2015, and the final book in the pentalogy, The Long Cosmos, was published on 30 June 2016.
The "Long Earth" is a name given to a possibly infinite series of parallel worlds that are similar to Earth, which can be reached by using an inexpensive device called a "Stepper". The "close" worlds are almost identical to "our" Earth (referred to as "Datum Earth"), while others differ in greater and greater details. All share one similarity: on none are there, or have there ever been, Homo sapiens - although the same cannot be said for earlier hominid species, especially Homo habilis.
The books explore the theme of how humanity might develop when freed from resource constraints: one example Pratchett has cited is that wars result from lack of land, and he was curious as to what would happen if there was no shortage of land or other resources.
- The Long Earth (June 2012)
- The Long War (June 2013)
- The Long Mars (June 2014)
- The Long Utopia (June 2015)
- The Long Cosmos (June 2016) 
- "The Long Earth". SFX. Retrieved 16 December 2011.
- "Announcement The Long Earth". Discworld Monthly. 10 October 2010. Archived from the original on 31 January 2012. Retrieved 16 December 2011.
- "Sir Terry Pratchett and Stephen Baxter speak to Simon Mayo". BBC Radio 2. 2 July 2013.
- Pratchett, Terry (2012). A Blink of the Screen: Collected Shorter Fiction. London, UK: Doubleday (Transworld Publishers). p. 79. ISBN 978-0-385-61898-4.
- Foreword by Stephen Baxter to PRATCHETT, Terry. BAXTER, Stephen. The Long Cosmos. London: Random House, 2016. (Doubleday)
- Heathcote, Charlotte (4 December 2011). "Sir Terry's Mindful of his Novel Future". express.co.uk. Daily Express. Retrieved 22 December 2011.
- Solym, Clément (18 June 2010). "Pratchett revient à la science-fiction, façon univers parallèles" (in French). Actualitte.com. Retrieved 22 December 2011.
- "Terry Pratchett, Stephen Baxter – The Long War (The Long Earth 2) announced". Upcoming4.me. 15 January 2013. Archived from the original on 15 June 2013. Retrieved 15 January 2013.
- "Terry Pratchett and Stephen Baxter: The Long Mars".
- "The Long Cosmos". Penguin.co.uk. Penguin Books Ltd. Retrieved 3 January 2017.
- Alison Flood (16 June 2010). "Terry Pratchett enters parallel worlds of science fiction | Books | guardian.co.uk". London: Guardian. Retrieved 16 December 2011.
- Terry Pratchett and Stephen Baxter talking about The Long Earth, Royal Institution video, 21 June 2012