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For the primary universe counterpart, see Earth.

Earth in the mirror universe was the center and capital of the Terran Empire, with a history different from the primary universe's Earth.

One historical difference arose in 2063, when Zefram Cochrane made first contact with the Vulcans. His colleagues attacked the Vulcans and stole their technology. (ENT: "In a Mirror, Darkly")

The Terran Empire was in existence for centuries by 2155. ("In a Mirror, Darkly")

The Klingon-Cardassian Alliance conquered the Empire sometime prior to 2370. (DS9: "Crossover")

Earth's fate under this regime was never established in any canon episodes or movies.

Fan fictionEdit

In Star Trek: Mirror Wars, Earth was the location of the Battle at Mirror Earth.
According to William Shatner's novel Spectre, Alliance ships destroyed the Imperial fleet in their version of the Battle of Wolf 359, and proceeded to reduce mirror-Earth to a barren wasteland, vaporizing the Great Lakes and other landlocked bodies of water. The Alliance enslaved Terrans.
Star Trek: New Empire: Earth was similarly ravaged in this continuity, though not rendered entirely lifeless. Criminals, pirates, miners and various aliens used the barren Earth as a base of operations for different purposes in the late 24th century. Between 2375 and 2385, Stephen April attempted to rejuvenate Earth using a Genesis device, with apparent failure; however, by 2407, Terrans had begun to re-colonize their world.