Most of the action inStar Trektakes seat in the real - universe Milky style Galaxy which is roughly divided into four quadrant , name after the first four letters of the Greek alphabet : Alpha , Beta , Gamma , and Delta . These are the galactic neighborhood that include pregnant planets like Vulcan , Qo’noS , and of grade , Earth . While Gamma and Delta still brook planets with ominous origins , the Alpha and Beta Quadrants are perhaps touched upon the most within theStar Trekmythos . Despite this common division , The Next Generationalso refer to a new quadrant recognise as Morgana . But not much is known about this certain quarter-circle as it is not remark any further .

Even beyond the Quadrants , ardentStar Trekfanscan spot the Galactic Barrier and several other celestial objects that are present in other galaxies like the Andromeda Galaxy ( yet another real - cosmos phenomenon ) that are still yet to be explore more by the dealership ’s supporter . While most of these astronomic quadrants can be seen as astronomical phenomena settle in scientific account , the mythos can also incorporate nearly - reverent organism like the Sha Ka Ree in part such as the so - shout " Great Barrier . " The two Barriers behave within them such heavenly mystery story that merit explanations of their own .

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Robin Curtis and Kirstie Alley as Lt. Saavik in Star Trek.

Alpha Quadrant

TheStar Trekgalaxy explained that the Alpha Quadrant contains more than 60 home worlds , and this includesCaptain Kirk ’s habitation planet Earthitself ( which Trekkers would call Terra or Sol III ) . Other major planets include the Tellarite aboriginal planet Tellar Prime , Trill , which houses both the eponymous humanoid species and the non - humanoid shake symbionts , and Betazed , which is inhabited by the Betazoids , a humanoid species that boasts warp - capable place vessel . Even though the bulk of territories under the Klingon Empire and Romulan Star Empire diminish in the Beta Quadrant , the two forces join the United Federation of Planets and the Cardassian Union to constitute the four great index in the Alpha Quadrant in the late twenty-fourth century .

Beta Quadrant

TheStar Trekgalaxy explain that apart from the Romulans and thedifferent version of the Klingons , the Beta Quadrant ’s highlight is Vulcan , the native satellite of Spock and other members of the Vulcan species . MultipleStar Trekencyclopedias suggest that Vulcan is located in a Sector of the same name within the Beta Quadrant . The 2002 publicationStar Trek Chartsalso estimates Vulcan ’s exact position to be somewhere in the 40 Eridani wizard scheme that really exists 16.3 unclouded years from Earth ’s Sun . Much like Spock , the inhabitants of Vulcan can be name with their raised eyebrows and pointy ears . Mostly destitute of emotions , the Vulcans are known for leading a liveliness on the basis of logic and reasoning .

The Klingon homeworld Qo’noS andthe Romulan Empire ’s native planet Romulusalso fall under this galactic quarter-circle . The former has a chaotic weather system with frequent electric storm and a rocky landscape characterized by legion dormant vent and caves . The aboriginal warrior species of Klingon are bound by their martial traditions and value pureness in armed combat . As for Romulus , the planet served as the second nursing home for Romulans ever since they migrate from Vulcan . The biological first cousin of the Vulcans , they had to move back to their original homeworld after Romulus ' sun explode in 2387 . According toThe Next Generation , Risa is also a part of this quarter-circle . cognise as the delight major planet , Risa is know for its sexually emancipated culture .

Gamma Quadrant

TheStar Trekgalaxy explain that the Gamma quadrantincludes severalStar Trekplanetssuch as Brax , Yadera , Meridian , and others . As seen inDeep Space Nine , the Quadrant also house the Dominion , an aggressive ensemble of several alien specie commanded by the shape - shifting Changelings ( AKA the Founders ) . Several territories of the quadrant are under the Founders ' control even though they have had only two home worlds . The first home world of the Founders was a rogue planet that house the Founders who were , at that metre , escape prosecution from the " solid state " ( how they referred to non - shape shifter ) . By 2372 , the Founders shifted to a 2d dwelling world .

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Delta Quadrant

TheStar Trekgalaxy explained thatStar Trek : First Contactconfirms the originof the Borgs from Delta but does n’t name their home planet . This is the case for many other species of Delta , a quarter-circle that is relatively unexplored by the United Federation . OnlyVoyageroffers the most inside information about the planets within the quarter-circle . Delta is also known as the world of antagonistic coinage like the Borgs , the Kazon , and the Vidiians . The cybernetic Borgs are mostly linked through a hive intellect love as the Collective . As for the Kazon , they are nomadic in nature which name it hard to retrace their satellite . Vidiians are similarly migratory and summercater - scarred faces as a final result of the frightful Phage pandemic .

The Galactic Barrier

TheStar Trekgalaxy explained in the original series what isknown asStar Trek ’s Galactic Barrier . In the subsequent long time , trekker have called it by many name browse from Great Barrier to the Energy Barrier , but there is still much disputation and discussion regarding the extraction of this energy force field that surrounds the Milky Way Galaxy . The origins behind its creation are still hotly debated so it is uncertain whether the Galactic Barrier was created by a natural process or by artificial means . Most of the ceremonious spaceships that have tried crossing this barrier in theStar Trekuniverse have often been destroyed with the crew even realize psychoactive traits while nearing the barrier .

The Andromeda Galaxy

Progressive exploration of theStar Trekgalaxy explained that the milklike manner Galaxy is definitelynot the last frontier , as several other galaxy lie beyond it , such as the Andromeda Galaxy . This serves as a home for the planet Kelva , the capital of the Kelvan Empire . The Kelvans are highly thinking shapeshifters . Because of their rational superiority , the Kelvans feel that it is their tariff to harness over other species . The same galaxy also include the humanoid species simply fuck as the Makers , Maker of service automaton and outposts in both the Andromeda and Milky Way Galaxy . The outposts were a residential requisite given how a supernova had destroyed their homeworld .

The Extragalactic Species

TheStar Trekgalaxy excuse that the spanning region of planets and species thatborderStar Trek ’s Galactic Barrierfrom the galaxy beyond the Milky Way are still vague inStar Trekcanon . Still , some information has been obtained on a few humanoid and non - humanoid extragalactic species . Species 10 - vitamin C is a major causa in head . A extremely - sophisticated non - humanoid wash with members much expectant than humanity , the mintage is responsible for for creating the heavy destructive Dark Matter Anomaly . With their bodies adapted to float in gas level , Species 10 - C belong to a homeworld near the Galactic Barrier . Other such example of extragalactic species include the " blank ameba " Nacene , the physically slight Ornithoid , and immortal races like the Q and the Douwd .

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The Center Of The Galaxy

Star Trek V : The terminal Frontierrevealsthe presence of the mythological satellite Sha Ka Ree decently at the heart of the galaxy that does n’t fall under any quadrant . An equivalent of the concept of heaven , Sha Ka Ree is regarded in Vulcan mythology as the realm of all world . But owing to humankind ’s fear of search the unknown and the 2d Galactic Barrier , the precise physical nature remains unexplored and is regarded as a fabulous entity . It goes to prove how the mysteries ofStar Trek ’s primary galaxy do n’t just go beyond its exterior but its very core too .

Multiple Alternate Realities And Timelines

Not only is there several quadrants , but theStar Trekgalaxy explained that there are also several substitute timelines in the dealership ’s world . In the Paramount+ seriesPicard , there is analternate reality that altogether rewritesStar Trek’shistory . The motion-picture show , from the original series to the Next Generation , take position in what is have it off as the Prime Universe . The J.J. Abrams movies take place in what is known as the Kelvin Timeline .

Abrams depict this in his movies by having the Kelvin Timeline Spock meet a Benjamin Spock from a unlike timeline . This allowedStar Trekto move on with any level it wanted to secern by explaining the character are from different timeline with new and fresh history . There is also a Mirror Universe , an substitute timeline rule by the fascist Terran Empire or else of the Federation . With so many quadrants , they all likely ended up very different in each timeline , making theStar Trekstories endless .

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A spaceship passes through a planet in Star Trek

A Trill, Tellarite, and a Betazoid with the Alpha Quadrant map in the background

A Vulcan, Klingon and Romulan with the Beta Quadrant map in background

The Founders with the map of Gamma Quadrant in the background

A Kazon, Borg, and Viidian with Delta Quadrant’s map in the background

Galactic Barrier in Star Trek Discovery

Kelvans standing together with Andromeda Galaxy in the background

Several extragalactic species from Star Trek

Sha Ka Ree in Star Trek V

Star Trek Kelvin Cast