From The Stargate Omnipedia

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  • In a distant galaxy, a race of humans called the Alterans experience a fundamental split in cultural governance. The majority push for a religious focus, while a smaller group push for a scientific one. Fearing extreme persecution, the small Alteran group choose against using technology which could brainwash their brothers and depart in a ship for a galaxy to call their own. The scientific Alterans will henceforth be known as Ancients. ("Avalon, Part 2;" "The Fourth Horseman, Part 1;" The Ark of Truth)
  • The Ancient Amelius begins to develop Stargate technology. (The Ark of Truth)
  • The Ancients come upon the Local Group and make the Milky Way Galaxy their home. They seed numerous worlds with Stargates as well as human life, and settle on a planet they name "Terra." ("Avalon, Part 2")
  • The religious-based Alterans will eventually ascend and be known as the Ori, establishing the Origin religion and creating planets full of worshipers to feed their need for energy.


  • The Ancients form an alliance with three other races in the galaxy including the Asgard, Nox and Furlings. They establish a meeting planet on Heliopolis as a sort of galactic "United Nations." ("The Torment of Tantalus")
  • Proclarush Taonas is abandoned by the Ancients. ("The Pegasus Project")
  • A terrible plague cripples the peoples of the Milky Way. ("Window of Opportunity," et al)
  • The Ancients of P4X-639 engineer a time machine to go back before the plague to reverse it, but discover the flawed technology only goes backwards by 10 hours. They eventually deactivate the device and accept their fate. ("Window of Opportunity")
  • The Ancients create a device on Dakara to repair the damage caused by the plague. ("Threads")
  • The Ancients of Earth abandon their interests in the Milky Way and set course for the nearby Pegasus Galaxy in Atlantis. Ayiana, a carrier of the plague, is left behind. ("Rising")
  • The Dakara device activates to relaunch the Milky Way's evolution process. (Conjecture in relation to other events)
  • The Ancients arrive in the Pegasus Galaxy. As before, they create a network of Stargates and seed life on numerous planets. Atlantis makes its home on Lantea. ("Rising")
  • The Ancients establish a network of defense satellites in the Lantean System. ("The Defiant One")


  • The Ancients dispatch the Destiny into the far reaches of the universe to discover a signal they have located buried in the fabric of space-time since the dawn of creation. ("Air, Part 2")

CA. 100,000 YEARS AGO

CA. 30,000 YEARS AGO

  • A crew of Asgard depart their planet in suspended animation. At this stage in their development they are still capable of sexual reproduction. ("Revelations")

CA. 15,000 YEARS AGO

CA. 11,000 YEARS AGO

  • The Altairan (not to be confused with the Ancients) Hubbald establishes an underground complex on Altair to take the place of the planet's failing biosphere. ("Tin Man")


  • Iratus bugs sample human blood and evolve into Wraith.
  • The Wraith construct ships and weapons to feed their hunger for human life essence.
  • The Ancients engage the Wraith in battle. Though they are superior in technology, the Wraith are superior in number. A 100-year war ensues. ("Before I Sleep")
  • The Ancients construct the Replicators, but eventually abandon the project and bomb Asuras. The Replicators begin to rebuild their civilization. ("Progeny")

10,000 YEARS AGO (8000 BC)

  • Ra arrives on Earth via mothership and takes a host from the North African desert. He proceeds to collect samples of humans from across the planet to spread among the stars as slaves. ("Stargate" the Movie)
  • The Ancient warship Aurora is sent to the outer rim of the Pegasus Galaxy to gather information concerning a weakness in Wraith defenses. Life support fails before they can return to Atlantis with the information they have obtained. The crew survive in stasis pods. ("Aurora")
  • An Ancient entrusts the Quindosim with a Zero Point Module. The Quindosim would eventually be culled by the Wraith. ("The Brotherhood")
  • Chaya Sar ascends and takes on the guise of Athar, protector of Proculus. She lashes out with her ascended powers against the Wraith. Ascended beings in the Pegasus Galaxy punish her by forcing her to protect Proculus for all time. ("Sanctuary")
  • The Ancients forfeit the 100-year war. They recall their forces to Atlantis for a final stand and create a window for Lantean refugees to return to Earth through the Stargate. Numerous ships reach the Lantean System but are destroyed. ("Before I Sleep")
  • Having narrowly escaped a catastrophic power failure in 2004, John Sheppard, Radek Zelenka, and Elizabeth Weir unwittingly trigger a time jump in a Puddle Jumper to this time period. After a fatal crash, Weir is the only survivor, recovered by the Ancients. ("Before I Sleep")
  • Having lost the war with the Wraith, the Ancients sink Atlantis deep beneath the Lantean oceans. Janus, the inventor of the time-traveling Puddle Jumper, disobeys the orders of the Council and leaves Elizabeth Weir in the city. She slumbers for 10,000 years, waking at intervals to regulate the power systems so that she may avert Atlantis's future power failure. ("Before I Sleep")
  • Realizing they have missed the evacuation of Atlantis, the crew of the Ancient warship Tria set a course for the Milky Way at light speed. ("The Return, Part 1")
  • The Lantean survivors, now on Earth, attempt to avoid influencing the primitive tribes of man. Moros, Ganos Lal, and numerous other Ancients seclude themselves and learn to ascend while the rest die out. ("The Pegasus Project")

6,700 YEARS AGO (4700 BC)

5,000 YEARS AGO (3000 BC)

  • Ishkur's elite force of Jaffa commanders rebel against him. He orders their deaths, but they flee in search of Kheb. The traitors find a secluded planet and become the Sodan. ("Babylon")
  • SG-1 travels back in time and unwittingly participates in the uprising of Ancient Egypt, driving Ra from the planet. The rebels secretly bury the Stargate at Giza so that it may be found in the future. SG-1's presence in the past is hidden from history. ("Moebius, Part 2")
  • After a human rebellion Ra loses interest in Earth. To prevent another uprising, he removes the written word from Abydonian culture. ("Stargate" the Movie)

CA. 4,000 YEARS AGO (2000 BC)

3,400 YEARS AGO (1400 BC)

CA. 3,000 YEARS AGO (1000 BC)

CA. 2,000 YEARS AGO (0 BC/AD)

CA. 450

  • Sensing the growing threat of the Ori, Moros abandons ascension to retake human form. Now known as Myrddin, he establishes an enclave of noblemen including Arthur and the Knights of the Round Table. During this period Myrddin is the most powerful human being on the planet. Ganos Lal is ordered by the other ascended beings to retake human form and monitor him. She takes on the name of Morgan Le Fay. ("The Quest, Part 2")
  • Myrddin creates phase-shifting technology to secretly develop a weapon capable of destroying ascended beings. Realizing his intention to one day destroy the Ori, Morgan destroys the device and hides Myrddin in an isolated Stargate network. ("Arthur's Mantle," "The Quest, Part 2")

CA. 750

CA. 1000

  • The inhabitants of P7J-989 advance their technology too rapidly. A chemical disaster renders the planet uninhabitable. Several citizens are placed in suspended animation within a bio-dome, their minds kept active by computer. ("The Gamekeeper")
  • Sokar visits Earth and captures a colony of medieval Christians. ("Demons")
  • The alien race of PXY-887 end the oppression of the Goa'uld on their planet and take the guise of Spirits to live in harmony with the transplanted Salish tribe. ("Spirits")
  • Anubis is banished by the Goa'uld System Lords. Though they believe him to be dead, he departs for Kheb. There, the ascended Oma Desala teaches him to ascend. The ascended collective witnesses Anubis's treachery and attempts to push him back to the mortal plane, but only succeeds halfway. Anubis departs the Milky Way Galaxy with the Ancient knowledge he has learned. Oma is punished for her actions. ("Last Stand;" "Threads")
  • The Asgard lose their ability to sexually reproduce, and adopt a "quick-fix" with cloning technologies. Genetic degradation is inevitable. ("Revelations")

CA. 1100

CA. 1300

CA. 1500

CA. 1550

CA. 1700

CA. 1797

CA. 1800

CA. 1850


CA. 1895



  • The D.H.D. is uncovered (without the Stargate) by Germans at a dig in Giza, and soon comes into the possession of the German government -- who are for many years unaware of its significance ("The Tomb")




  • The Stuart Expedition fails. Numerous crates, including one carrying the canopic jars of Osiris and Isis, sink with the shipwreck. ("The Curse")


  • Dr. Wilhelm Brücke finds the Stargate being studied by the Langfords in a Cairo warehouse, and abducts Dr. Paul Langford for an ill-fated trip to Abydos. Only Dr. Langford and his daughter survive, and are returned to Earth with their memories of the event wiped. (Stargate Origins)
  • The Stargate is ferried across the Atlantic Ocean aboard the steamship Achilles. Baal's plan to travel back in time and alter history is thwarted by Cameron Mitchell. (Stargate: Continuum)



  • President Franklin Roosevelt suspects the Stargate to be a weapon and orders Dr. Langford to take advantage of the device for use against the Germans. The Stargate opens to the planet Heliopolis. Ernest Littlefield is sent to investigate and is trapped on the other side when the gate disconnects. ("The Torment of Tantalus")
  • After the apparent loss of life during the Langford's research, the U.S. government orders the Stargate program mothballed. The gate was locked away and the Langfords sworn to secrecy. ("1969")
  • After the end of the war, the Russian army discovers the Giza D.H.D. in Germany and takes it back to Russia. ("Watergate")





  • A solar flare sends SG-1 into the past. The team is taken into custody by the Air Force. George Hammond recognizes a note in his handwriting and frees the team. Before they go, he notices a scar on Samantha Carter's hand. With help from Catherine Langford and the future Hammond, SG-1 uses the Stargate and return to their time. ("1969")







  • Groups of Novans branch out into their galaxy to colonize other worlds when it is apparent that the geology of their planet is coming undone.










CA. 1996 ("Stargate" the Movie)

NOTE: That the film's events take place two years later than its theatrical release is established by the 1-year gap prior to "Children of the Gods" and Carter's statement that "Out of Mind" takes place in the year 1999. (This assumes that roughly one season of the TV show equals one year of time.)

CA. 1997-98 (SG-1 Season One)


CA. 1998-99 (SG-1 Season Two)

  • Scientists at Area 51 recover two Goa'uld death gliders and begin to retrofit them for the X-301.
  • Samantha Carter is forcibly blended with Jolinar, who is on the run from a Goa'uld ashrak. Jolinar expends all of her energy to preserve Carter's life.
  • SG-1 is sentenced by the Taldur to life imprisonment in Hadante. The team works with Linea to leave the prison world. Once out Linea, called "Destroyer of Worlds," escapes.
  • With Thor's Hammer destroyed, Heru'ur takes Cimmeria for himself. Daniel Jackson breaks the natural cycle of Cimmerian development for the people and reveals the Asgard -- their gods -- prematurely. Thor arrives in the Asgard mothership Beliskner to wipe out Heru'ur's forces. But Heru'ur himself escapes.
  • The P5C-353 Orb is brought back to Earth, where it is opened. Stargate Command agrees to deposit the Orb on P4G-881.
  • Apophis takes Rya'c as his pupil. Teal'c receives word and returns to Chulak to rescue his son.
  • One Abydonian year to the day, Daniel returns to Abydos and finds Sha're with her father. She is pregnant, and the Goa'uld Amonet is sleeping so that the child will not emerge stillborn.
  • Jacob Carter informs his daughter Samantha that he has lymphoma and a terminal diagnosis.
  • Shifu, the son of Apophis and Amonet, is born. Heru'ur travels to Abydos to steal him, but Daniel Jackson hides the baby among the Abydonians and makes Amonet think Heru'ur was successful. Apophis, hoping to meet his newborn son, leaves only with Amonet.
  • SG-1 meets the Tok'ra and establishes a tentative alliance.
  • Selmak, in need of a new host, blends with Jacob Carter and becomes Earth's envoy. Saroosh, Selmak's previous host, dies.
  • SG-1 tampers with the natural balance between the Salish and their Spirits, forcing the spirits to reveal their true nature.
  • Rogue N.I.D. agents remove the Touchstone from Medrona, plunging the planet into an ice age. SG-1 retrieves the device and returns it to the Medronans before the damage is permanent.
  • Jack O'Neill accidentally downloads the entire database of the Ancient repository of knowledge into his mind. The information in his brain allows him to install numerous new Stargate addresses, not known to the Goa'uld, into the dialing computer. O'Neill sends himself to the Ida Galaxy where the Asgard remove the knowledge.
  • A black hole causes P3W-451 to succumb to a time dilation field, trapping SG-10 on the planet.
  • Apophis pleas with SG-1 to protect him from Sokar. He dies of his injuries at Stargate Command. Teal'c sends his body through the Stargate to the waiting hands of Sokar, who reanimates Apophis to repeatedly torture him to death.
  • Ma'chello tricks Daniel Jackson into transferring bodies. He leaves the base for Colorado Springs, but the authorities soon capture him. Ma'chello is forced to return to his original body, where he dies.
  • George Hammond notices the same wound on Samantha Carter's hand, and realizes the time has come to write the note to his younger self. After an adventure in 1969 and the distant future, SG-1 returns to their proper time.
  • Hathor captures SG-1 and stages an elaborate hoax to gain what information they have about the current Goa'uld domain. A Tok'ra agent helps free the team. O'Neill pushes Hathor into a cryogenic soup, killing her.

CA. 1999-00 (SG-1 Season Three)

CA. 2000-01 (SG-1 Season Four)

CA. 2001-02 (SG-1 Season Five)

CA. 2002-03 (SG-1 Season Six)

CA. 2003-04 (SG-1 Season Seven)

CA. 2004-05 (SG-1 Season Eight, Atlantis Season One)

CA. 2005-06 (SG-1 Season Nine, Atlantis Season Two)

CA. 2006-07 (SG-1 Season Ten, Atlantis Season Three)

CA. 2007-08 (Atlantis Season Four, The Ark of Truth)

CA. 2008 (Atlantis Season Five, Continuum)

CA. 2009-10 (SGU Season One)

  • Icarus Base personnel and guests are forced to evacuate to the Ancient ship Destiny during a surprise attack. With Earth several billion light years away the small band of survivors prepare for a long journey.
  • Homeworld Command enacts their plan to forcibly remove Colonel Young from command of Destiny, draining her weapon reserves so that they may attempt to dial Earth while she is recharging within a star. Dr. Nicholas Rush rigs a light show to force Colonel Telford and his team to retreat from the ship. Young, now restored to command, makes it clear to the Pentagon that he is in charge of the ship -- whether they like it or not. The Destiny crew begin to settle in for the long voyage ahead.
  • Rush frames Colonel Young for the death of Spencer, who committed suicide from cabin fever. Young coaxes this information from Rush while alone on a planet. A fight ensues and Young, having beaten Rush unconscious, leaves him for dead.
  • The blue aliens reveal themselves and dogfight with Destiny and her shuttle in order to buy time to capture Chloe Armstrong. Colonel Young uses the communication stones to switch bodies with one of the blue aliens, who somehow possess a stone of their own, until he discovers a confined Dr. Rush. Young sets him free, and Rush and Chloe escape with a shuttle.
  • The Destiny crew come upon an artificially created world. A group of the ship's compliment take extended shore leave on the planet while Destiny is out of range, but ultimately several choose to stay permanently. They designate this new world as Eden.
  • Lt. Johansen reveals she is pregnant with Colonel Young's baby, the result of an affair prior to their arrival on Destiny.
  • Chloe Armstrong begins to show signs that she was experimented on by the blue aliens and is undergoing a gradual transformation.
  • Destiny departs the galaxy, crosses a great expanse at F.T.L., and enters a new galaxy.
  • The Lucian Alliance uses a naquadria-enriched planet to dial Destiny and seize the ship by force. Ultimately their leader is defeated and the remaining alliance members are placed under lockdown.
  • Telford reaches Destiny with the Lucian Alliance.
  • T.J. loses her baby in a Lucian gunfight in the medical bay. Destiny, recognizing the medic's emotional well-being is key to the mission as a whole, creates an elaborate hallucination to convince her an omnipresent race transferred her unborn child back to Eden to be raised by the settlers.


  • Earth celebrates the tenth anniversary of its alliance with the Aschen. Only then is it discovered that the Aschen are slowly exterminating humanity by preventing births. SG-1 regroups to send a message into the year 2000. (Defunct timeline) ("2010")

CA. 2010-11 (SGU Season Two)

  • Nicholas Rush cracks Destiny's master control code and discovers the bridge, soon discovering the ship's true mission -- though he keeps it to himself for several weeks.
  • Lt. Riley is critically injured on an away mission, and ultimately suffocated by Colonel Young to end his suffering.
  • Destiny catches up to a seed ship under the control of the Ursini, a nearly extinct alien species. Colonel Telford becomes trapped on their ship when they return to F.T.L. in the middle of a battle.
  • Destiny drops out of F.T.L. and only resumes its course when it is confident Colonel Young has digested his grief for killing Riley and is fit to command the crew.
  • Rush's secret trips to the bridge are discovered, and he is forced to reveal Destiny's true mission to his colleagues.
  • The Lucian Alliance soldier Simeon kills Amanda Perry and Ginn and escapes to a desert planet. Several teams follow him, believing he has critical information regarding an imminent attack on Earth. Rush, however, tracks him down and kills him for murdering the woman he loved.
  • The crew left behind on "Eden" mysteriously return in range of Destiny aboard what appears to be a fully restored shuttle, only to gradually replay their deaths from a terrible winter on the planet. T.J. discovers her child is not among the crew.
  • Destiny enters a conflict with a fleet of drone ships left behind after an ancient war. The Ursini return aboard their seed ship and return Colonel Telford to the crew. The Ursini are ultimately destroyed by the drones.
  • Chloe's transformation by the blue aliens is nearly complete, and she summons them to assist in the fight against the drones. Lt. Scott returns her to them, and they appear to remove whatever was transforming her body.
  • Destiny and her crew are duplicated, the crew being sent 2,000 years into the past, and Destiny back in time a handful of hours. Only Nicholas Rush and David Telford remain from the original timeline. The duplicated Telford is killed by Dr. Rush Prime. Dr. Rush Prime appears to be destroyed along with Destiny Prime when the ship sinks into a star.
  • A Lucian Alliance terrorist attack on Earth is thwarted by Camille Wray and Ronald Greer.
  • Dale Volker's kidneys begin to fail, and Ronald Greer donates one of his.
  • The consciousness of both Amanda Perry and Ginn are discovered floating in the ether of space. Using Chloe and the communication stones, both women's minds are downloaded into Destiny's mainframe.
  • An attempt to use Langara's naquadria core as a power source to dial the ninth chevron fails when their government discovers Earth's duplicity.
  • The remaining surviving Lucian Alliance officers, save for Varro, are killed during a rescue mission.
  • The Destiny crew discovers a human colony of Novans and the truth about what happened to their counterparts. The people are rescued from their planet to return home to Novus. Upon arrival, it is apparent that Novus suffered a geological cataclysm that is still destroying the planet. Destiny downloads as much of the Novan archive as possible before it is destroyed, and the ship sets course to deposit the remainder of the Novans on a new world.
  • T.J. discovers she will contract Lou Gehrig's disease in five years.
  • When the drones' plan to block all Destiny-compatible stars in the galaxy is fully realized, Eli convinces Colonel Young that their only alternative is to "skip" the rest of the galaxy by putting the crew in stasis. But the crew is short one stasis pod, which is broken, and Eli volunteers to stay conscious in the hopes that he can discover a solution.

CA. 2070

  • SG-1 enters the Stargate in 1969 a few moments too soon, which sends them far into the future. An aged Cassandra uses advanced technology to send them back to 1999. ("1969")

CA. 50000