My head-canon is much bigger than you would think it is, and includes events of other Sci-Fi franshises, as well as the Real World. Here's some of the things that happen in it, as told in the year 11000000000:
- Sometime between 2000-1500 BC: Sitchin's Nibiru/Planet X passes through outer Solar System, causing perturbations in the planets' orbits, but it gets redirected by the Q, and is ejected by Planet Nine, preventing it from coming back on December 21, 2012 and wreaking havoc again. This causes Planet Nine to end up in its current orbit. Goa'uld Ra rules over Egypt, leaving a lasting impression on Egyption mythology.
- Between 7-4 BC: Christ is born. Obviously, this (and all Biblical events) is the same as the Real Universe, as far as Heaven, Earth, and Hades go.
- 33 AD: Crucifixion, Resurrection, and Ascension of Christ.
- Sometime between 300-500 AD: Vulcan-Romulan Schism; start of Earth's Dark ages.
- April 20, 1889: Adolf Hitler is born.
- 1906: San Francisco Earthquake. Renegade Borg faction splits off and heads to Andromeda Galaxy, calling themselves the Red Borg.
- Between 1910-1945: WW1, Great Depression, Hitler rises to power, WW2, Hitler is abducted by Goa'uld and left frozen in stasis chamber, orbiting Chulak's L2 Lagrange point. (This is where my timeline departs from the Real World timeline.)
- 1960s through 2050: Star Trek TV Series/Movies are made. Charles Manson abducted by Goa'uld and frozen in stasis chamber, orbiting Planet Nibiru (which is now orbiting the center of our Galaxy, 40 light-years from the Sun). Replicators, Goa'uld, and Ori defeated, except for a Human-Form Replicator, Fifth, who somehow survives (no one knows how). ISIS terrorizes Earth with random attacks, but is eventually defeated, except for a couple small groups. WWIII causes drastic population drop. Stargate Network is discovered. Jurassic Park is built; 10 of each kind of dinosaur (5 males, 3 females, 2 sequential hermaphrodites) are abducted by Red Borg and released on an uninhabited planet.
- 2050-2100: Invention of Warp Drive. First contact with Vulcans. Anakin Skywalker is born. His DNA, along with that of his relatives, is kept in a hidden gene archive, in case of a Galaxy-wide mass extinction event.
- 2100-2400: Main Star Trek events occur. Trip isn't killed, unlike the series finale of ENT. Data finds personal shield technology aboard Romulan ship and is spared from its destrucion. Seven Of Nine and other major characters from all the series and movies (including Khan, from Into Darkness) are abducted by the leftover Human-Form Replicators, using the Alternate Reality Mirror, cryogenically frozen and put into orbit around Kepler-911. Timeline splits from Star Trek Main Timeline.
- 2800-4000: Immortality gene is discovered in DNA of Balor, a humanoid (from Space 1999) who was found drifting in a living asteroid, but kept secret until 36th Century. Star Wars Galaxy discovered 1 trillion light-years from the Milky Way. Galactic redshifts found to be caused by the universe rotating (with a period of 3,767,303,134.617707... years), not expanding. Vampiro (a planet with exotic gravity, a mass of 1080 Suns, and a diameter of 1 sextillion light-years) is discovered a googol light-years from Earth, in the direction of Ursa Major. Bajor struck by small asteroid, destroying the Fire Caves and releasing the Pah-Wraith.
- 4000-6000: Major wars across space. Hitler and Charles Manson discovered and thawed by Pah-Wraiths. Red Borg form intergalactic alliance with the following nations/species:
- United Federation of Planets
- Romulan Star Empire
- Klingon Empire
- Dominion
- Cardassian Union
- Bajoran Space (Grown quite a bit since the 24th century)
- Kazon
- Vidiians
- Talaxians
- Wraith
- Human-Form Replicators
- Asgard
- Ascended Beings (Ancients)
- Tholians
- Breen
- Goa'uld
- Tok'ra
- Jaffa
- 6873: By this time, all sentient beings in Red Borg Alliance have the immortality gene. Pah-Wraith hiding out on Vampiro.
- 7000-9110: LGBT uprising. Christian population grows slowly throughout the 1st half of this period, then stalls at 1 decillion due to resistance from Athiest factions. Total population of Red Borg Alliance and neighboring allies as of January 1, 9110 at 0:00 UTC: 579630613987329332759579329231878236487468216481938571236195023012629837958598237952598185127321098340923423702302913850319570959020929739.
- 9110-11000: Population stalls due to lack of straight couples. Christian population skyrockets, outpacing everyone else by at least a factor of 1 trigintillion. All but a few percent of people are Christian by the end of this period. The Q join the Red Borg Alliance (May 6, 10839). Population of Alliance as of 11000: 2751-1, give or take 20%.
- 11000-8675308: Relatively quiet period. Hitler and Charles Manson in hiding. Venus struck by rogue planet, stripping away most of its atmosphere. Unobtanium, an exotic, nearly indestructible alloy with a melting point of 1075 K, is discovered. Menopause no longer occurs, due in part to advances in medical technology.
- 8675309-24972797: Hitler and Charles Manson captured and frozen in Carbonite. Their wherabouts are strictly classified. Uranus and all its moons (except Titania) given to Dominion. Vampiro and all of its neighbors join Red Borg Alliance. Seven Of Nine and the other frozen characters are thawed and (through extremely advanced technology that 21st Humans thought was absolutely impossible) their DNA is combined with Balor's, resulting in them becoming immortal. Khan's memory is erased, and he blends in with the general population, eventually getting married.
- 24972797-1000000000: Hitler and Charles Manson dropped off at Ganymede Prison Colony. Vampiro becomes Capital of Red Borg Alliance. LGBT community becomes extinct. All people are converted to Christianity by this time, except for a few people (Hitler, Manson, and anyone else serving life sentences at various prison colonies).
- 5000000000-7000000000: Sol becomes a red giant, then a white dwarf. An artificial sun is put in its place. Earth is re-terraformed to repair damage caused by death of Sun, but most of it remains as uninhabitable wasteland. Venus is terraformed, and becomes the main planet of the Sol system. Bajor and Cardassia are ejected from their systems, and eventually get captured through perturbations caused by the planets of the Solar System. Nibiru collides with Barnard's Star.
- 7000000000-present: Hitler and Manson escape, but are stranded on Vampiro. A manhunt ensues for at least 5000 years before Hitler is captured. Manson is captured 1000 years later. Everything outside the Universe found to be frozen in time, suggesting that the Universe is (from the viewpoint of Heaven and other universes) experiencing time at an infinite rate, at least since the year 2911. By this time, unobtanium is the main material used in house, ship, and station construction, making shields obsolete.