2009

History of the Doctor Who Universe

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)
• 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 Doctor battles the Daleks. (DW: TBA/Journey's End)

2008

21st century 2000s

2010