2009

October

 * The Tenth Doctor and Martha Jones visit Blackwood Falls. (DW: Forever Autumn)

Negated

 * The Master rules the Earth with an iron fist, before Captain Jack successfully destroys the Paradox machine, reversing time back to 2008. (DW: Last of the Time Lords).
 * Shreela Govindia Dies of the autoimmune disease. (NA: Cat's Cradle: Warhead)

Unknown

 * ATMOS, a combination GPS/emission control system for automobiles, becomes widespread in vehicles around the world.
 * Thousands of Adipose are born from peoples fat and walk around the streets. During this time, Donna Noble reunites with the Tenth Doctor and begins her travels with him. Before leaving with the Doctor, however, Donna briefly encounters Rose Tyler (although she is unaware of Rose's identity). (DW: Partners in Crime)
 * Conspiracy theorists begin noting the disappearance of bees from the planet Earth, which is also noted by Donna Noble. (DW: Partners in Crime, et al). It is later learned that they have left earth in anticipation of its imminent relocation to the Medusa Cascade (DW: The Stolen Earth).
 * The Sontarans invade Earth . During this event, Martha Jones is temporarily reunited with the Doctor and meets Donna Noble for the first time. Donna also narrowly misses witnessing a brief transmission from Rose Tyler in the TARDIS. As part of the Sontaran invasion plan, all ATMOS-equipped vehicles begin emitting a toxic gas intended to transform the world's atmosphere into a more hospitible one for Sontaran offspring; numerous fatalties are reported worldwide before the Doctor disables the devices. (DW: The Sontaran Stratagem/The Poison Sky)
 * Rose Tyler returns from a parallel Earth. (DW: Turn Left)
 * The Earth is relocated to the Medusa Cascade by the Daleks under the control of the Supreme Dalek and Davros. Despite the relocation, the planet retains a full communications network. An invasion of Earth by the Daleks commences and a number of humans are taken to "The Crucible", the Dalek mothership, where they are killed in tests of the reality bomb. As part of a counter-insurgency against the Dalek invasion, former Prime Minister Harriet Jones brings together a number of the Doctor's former companions, including Captain Jack Harkness, Sarah Jane Smith, and Martha Jones in order to contact the Doctor, and before she herself is killed by the Daleks. Rose Tyler, meanwhile, joins Donna Noble's family and is ultimately reunited with the Doctor. The Doctor and his companions are successful in restoring Earth to its original location; this sparks worldwide celebrations around the planet. Afterwards, Mickey Smith chooses to remain on his original Earth instead of returning to Pete's World, Harkness offers Martha Jones a job with Torchwood 3, and the Doctor returns Rose and Jackie Tyler to Pete's World, along with his clone. Donna Noble is returned to her family with all memories of the Doctor wiped from her mind. (DW: The Stolen Earth/Journey's End)

Doctor Who history

 * Dates to be confirmed: in lieu of a regular weekly season, several special episodes are scheduled for broadcast in this year, leading up to a full season in 2010. Russell T. Davies is scheduled to hand over executive producer duties to Steven Moffat as production of the 5th series commences this year.