2157

In 2157, the 22nd century Dalek invasion of Earth began with attacks on Sifranos in the Arcturus sector (a moon of Sifranos was destroyed, one billion settlers being massacred), Azure, Qartopholos, (PROSE: Lucifer Rising) and Mars, (TV: Genesis of the Daleks) leading to a decade of occupation. (TV: The Dalek Invasion of Earth)

Earth Central went bankrupt and dissolved, being replaced by the Earth Alliance of Corporations.

The Seventh Doctor, Bernice Summerfield and Ace visited Project Eden in the Lucifer system prior to the destruction of both. (PROSE: Lucifer Rising)

The Seventh Doctor and Roz Forrester were stranded on the planet Mars. (PROSE: GodEngine)