Argosians
Native to the planet Argos, they are a civilization of beautiful, happy people who celebrate while the sun shines and drop to sleep the moment it sets. They appear to age very rapidly; in Earth terms, an Argosian lifetime is approximately 100 days.


Aschen
Seemingly benevolent species that, by the Earth year 2010, helped humanity create a Golden Age through advanced technology. In reality, they plotted to wipe out the human race through a process of sterilization and slow attrition. Entrenched in Earth society and holding key positions of power, the Aschen's diabolical scheme allegedly was circumvented by an SG-1 time-travel expedition to 10 years earlier. Of course, as there are no official records of that mission, this account is all but impossible to verify.


Asgard
Through the use of hologrammatic heroes, these benevolent natives of the planet Cimmeria actually spread the myths of the legendary Norse gods!


Bedrosians
One of two cultures on the planet Bedrosia, this species has long been at war with their rivals, the Optricians regarding control of their planet's Stargate. The Bedrosians believe human life evolved without a gateway and was created by their god, Nefertum.


Bysra
This species is native to the planet Chartago, previously known as Planet P3X1279.


Enkarans
These former slaves were relocated, with SG-1 help, from a Goa'uld colony to a new homeworld. Upon settling, however, they found their new planet being terraformed to permit habitation by another species, the Gadmeer, whose biology and the Enkarans' require mutually exclusive environments.


Eurondans
These technologically advanced natives of the planet Euronda claim to be direct descendants of humans from Earth!


Gadmeer
This species was discovered by the formerly enslaved Enkarans during a terraforming process on the Enkarans' new homeworld. Because the Gadmeer and Enkaran biologies require mutually exclusive environments, and because the terraforming, if stopped, would lead to the Gadmeer's extinction, this presented a ticklish diplomatic situation.


The Goa'uld
These parasitic, snakelike creatures who rule the planet Chulak have a reputation as ruthless conquerors who collect lifeforms from around the galaxy for use as host bodies. Visiting Chulak or any Goa'uld colony is not advised! The Goa'uld are politically organized around a structure of feudal System Lords. A rebel group, the Tok'ra Goa'uld, who inhabit only willing hosts, is opposed to the often bloodthirsty traditional arrangement. Fun trivia: SG-1 team-member Teal'c was once a member of the notorious "Serpent Guards" of Apophis, a Goa'uld System Lord!


Hankans
Natives of the planet Hanka, they until recently practiced a rite of passage for young members involving "mind fire," an illnesslike condition requiring a lone journey into a nearby forest and overnight survival.


The Hebridan
The ancestors of this human race on the planet Hebridan came through the Stargate from the Celtic isle of New Hebrides. Their planet eventually became a Goa'uld outpost, but was liberated thousands of years ago with the help of the Serrakins, with whom they now share the planet — a singles vacation spot as one of the few where you'll find human/non-human intermarriages!


Jaffa
The Jaffa have a special — though sometimes tempestuous! — relationship with the Goa'uld in that they carry infant Goa'uld symbiotes in pouches in their bellies. There is a strong symbiotic relationship between the larva and the Jaffa, because the symbiote guarantees its host immunity to diseases. For this reason, Jaffa live to be very old.


Latonans
The lucky Latonans — of planet Latona — have the luxury of devoting their lives to spiritual and intellectual matters because they traditionally have had a device called a Sentinel that keeps away aggressors — or maybe even destroys them! The Latonans themselves aren't sure.


Nox
Small, peaceful, fairylike people occupying a planet previously thought to be uninhabited, the Nox can make things invisible — and resurrect the dead!


Optricians
One of two cultures on the planet Bedrosia, this species has long been at war with their rivals, the Bedrosians, regarding control of their planet's Stargate. The Optricians believe humans were not native to their planet, but brought by aliens through the gateway.


Orbanians
The planet Orban has a scientific-exchange program with Earth. And a good thing, too, since the children of this race, while incredibly intelligent, otherwise have no concept of fun or play!


Pangarans
Enjoy a simpler time on Pangar, home to a pleasant human race technologically just a few decades behind Earth. But watch out for snake-oil salesmen! The planet's drug "tretonin" is an immortality serum with serious side-effects — because it's distilled from those snake-like Goa'uld symbiotes!


Reetou
No longer living on their homeworld Reetalia, which was destroyed by the Goa'uld, the Reetou are able to render themselves invisible. A large rebel faction believes that by killing all potential hosts for the Goa'uld they gradually will eliminate the Goa'uld themselves. Watch out for the Reetou — if you can!


Replicators
Artificial organisms in the form of small metallic bugs, they kill and rapidly replicate, overwhelming planetary life and mechanisms.


Serrakins
One of two groups now found on the planet Hebridan, this reptilian race helped to liberate the native humans from the Goa'uld thousands of years before. A paragon of harmony, this planet often attracts singles as one of the few places where you'll find human/non-human intermarriages!


Shavadai
Native to the planet Simarka, this species is similar to the ancient Mongols of Earth.


Tollans
The natives of Tollana are extremely advanced technologically. The late Omoc, their leader at the time of Earth's first encounter with their civilization, revealed his people's collective guilt over having shared Tollan technology with a less-advanced planet, resulting in that world's self-destruction by war.


Touched (SEE ALSO: Untouched)
Native to the bifurcated planet P3X797, whose two hemispheres are divided into permanent night and day, the Touched live on the dark side of their planet and are heavy-browed primitives with limited skills and brutal instincts.


Unases
Native to planet P3X888, these large, primitive, reptilian humanoids possess rudimentary language. Incursions by slavers eventually led to the Unas homeworld being declared off-limits.


Untouched (SEE ALSO: Touched)
Native to the bifurcated planet P3X797, whose two hemispheres are divided into permanent night and day, they are a Bronze Age people bearing similarities to the ancient Minoan civilization of Earth. They reside primarily on the illuminated side of the planet.


Zatarc
This is not a planetary species, but the designation for a member of any species who has been subjected to Goa'uld mind-control technology and subconsciously programmed to kill, with their recollection of the procedure covered by false memories. Anyone who has come into contact with the Goa'uld could well be a Zatarc and be wholly unaware of the fact.