The science fiction film 'Stargate', directed by Roland Emmerich and written by Roland Emmerich and Dean Devlin, was released, laying the foundation for the franchise.
The television series 'Stargate SG-1' premiered, serving as a sequel and expansion of the Stargate universe from the original film.
The spin-off series 'Stargate Atlantis' premiered, expanding the universe and exploring new storylines related to the Stargate mythology.
The TV series 'Stargate Universe' premiered, presenting a darker and more serialized approach to the Stargate franchise.
The original television series 'Stargate SG-1' concluded after 10 seasons and 214 episodes.
The television series 'Stargate Atlantis' concluded after 5 seasons and 100 episodes.
The final episode of 'Stargate SG-1' aired bringing the long-running series to an end.
The web series 'Stargate Origins' was announced, focusing on the backstory of Catherine Langford.
The 'Stargate Origins' web series was released, expanding the franchise's backstory and available on digital platforms.
The Ancients create the network of Stargates millions of years ago, enabling instantaneous travel across the galaxy and beyond.
The Goa'uld rise to power, enslaving various human populations and establishing themselves as gods across multiple worlds.
The Earth government forms Stargate Command to study and manage the Stargate discovered at Giza, Egypt.
SG-1 leads the first successful expedition through the Earth Stargate to explore alien worlds and establish alliances.
SG-1 defeats the powerful Goa'uld System Lord Apophis, weakening the Goa'uld empire.
SG-1 acquires and starts utilizing Zero Point Modules (ZPMs) to power advanced Ancient technology including the Stargate system.
SG-1 establishes a critical alliance with the Tok'ra, a faction of Goa'uld who oppose the System Lords' tyranny.
The Tau'ri and their allies defeat Anubis and use the Dakara superweapon to disable all functioning Goa'uld devices.
Expedition to the Pegasus Galaxy discovers the lost city of Atlantis, the ancient home of the Ancients.
Humanity discovers the Wraith, powerful predators in the Pegasus Galaxy threatening both humans and the Stargate program.
The Atlantis Expedition is launched to study the city and defend against the Wraith threat.
SG-1 successfully thwarts the Ori, ascended beings threatening to convert or annihilate the Milky Way galaxy.
Daniel Jackson ascends to a higher plane of existence, gaining advanced knowledge and abilities.
Replicators take control of the Dakara superweapon, creating a new major threat to the galaxy.
Stargate Command defeats the Lucian Alliance, a powerful mercenary group trying to control the Stargate network.
