40th century

By the end of the 40th century, the Space Security Service existed, with a mission to control alien threats in the solar system, and its headquarters in Central City on Earth. (DW: The Daleks' Master Plan)

Gravity force as a source of energy had been abandoned for centuries by the human race. (DW: The Daleks' Master Plan). Oil was still used though, and since the Earth had been drained of it, corporations like Oil Corp went looking for it on other planets. (DW: The Infinite Quest)

Space piracy was common at this period. (NSA: The Pirate Loop)

Major events

 * 3914 - Ood Operations is established. (WEB: Captain Jack's Monster Files)
 * 3922 - The first succesful cloning experiments are carried out. (DW: The Invisible Enemy)
 * 3932 - Zephon overthrows the Embodiment of Gris as master of the Fifth Galaxy. (BFA: Neverland)
 * 3935 - The war between Galactic Federation and Galaxy 5 ends. The Doctor and Sarah Jane Smith settle a dispute between Peladonian trisilicate miners and the ruling class, and prevent Ice Warrior agents of Galaxy 5 from taking over Peladon. (DW: The Monster of Peladon)
 * 3975 - Acording to Mavic Chen this is the last time peace in the solar system was disturbed until the year 4000 (DW: The Daleks' Master Plan)
 * 3985 - The coronation of King Tarrol of Peladon occurs. (NA: Legacy)
 * 3999 - In July, the Intergalactic Olympic Games are held on Micawber's World. (EDA: Placebo Effect)
 * Unknown - Baltazar destroys Earth's Defense Forces, but his warship is destroyed before he can assault the planet. (DW: The Infinite Quest)
 * Unknown - The Mantasphids invade Myarr, leading to a war between them and the Humans. (DW: The Infinite Quest)
 * Unknown - The Brilliant is trapped in a time loop and is lost. (NSA: The Pirate Loop)

Minor Events

 * 3990 - Bret Vyon joins the Space Security Service
 * 3995 - Bret Vyon makes first rank
 * 3998 - Bret Vyon makes second rank