Alternate history Alternate history or alternative history is a subgenre of speculative fiction (or science fiction) and historical fiction that is set in a world in which history has diverged from the actual history of the world. It is sometimes abbreviated AH. Another occasionally-used term for the genre is "allohistory" (lit. Alternate_history
Antikythera mechanism The Antikythera mechanism ( ), is an ancient mechanical calculator (also described as the first known mechanical computer) designed to calculate astronomical positions. It was recovered in 1901 from the Antikythera wreck but its complexity and significance were not understood until decades later. It is now thought to have been built about 150 Antikythera_mechanism
Fox on the Rhine Fox on the Rhine is an alternate history book co-authored by Michael Dobson and Douglas Niles. It deals with the 1944 Plot to assassinate Hitler, which failed in reality. Heinrich Himmler comes to power through assassinations of his superiors, so he may become führer. Erwin Rommel is a main character throughout the book, and realizes that Germany is not headed in the right direction. Fox_on_the_Rhine
Conquerors' Trilogy Conquerors' Trilogy (series, saga) refers to a series of science fiction novels by Timothy Zahn. In a space opera setting, a botched first contact leads to an interstellar war between humanity (nicknamed by the aliens The Human-Conquerors) and an alien race, the Zhirrzh (nicknamed by humans The Conquerors). In the background, other alien races try to take advantage of the conflict between the two powers. Conquerors'_Trilogy
The Invasion of 1910 The Invasion of 1910 is a 1906 novel written mainly by William Le Queux (with H. W. Wilson providing the naval chapters). It is one of the more famous examples of Invasion literature and is an example of pre-World War I Germanophobia, as it preached the need to prepare for war with Germany. The_Invasion_of_1910
Alien space bats Alien space bats (ASBs) is a neologism for plot devices used in alternate history to create a point of divergence that would otherwise be implausible. Alien_space_bats