Vulcan blood is copper-based and is green when oxygenated in the arteries and is copper or rust colored when deoxygenated in the veins. In general, Vulcans are three times physically stronger than humans, and live three times as long—Sarek lived just over two centuries and it has been suggested that Vulcans have a life expectancy of at least 250 Earth years. A Vulcan of less than a century in age is still considered young. The strength of Vulcans is often attributed to Vulcan's gravity being significantly greater than Earth's. It has also been attributed to their superior mental discipline. Vulcans prefer higher temperatures than humans do. In the The Original Series episode "The Deadly Years" when Spock was affected by rapid aging he noted how cold the ship seemed, and he responded by turning the temperature in his room up to well above 100 °F (38 °C). They are also able to breathe a much thinner atmosphere than humans, due to the atmospheric conditions on the planet Vulcan.
Vulcan females have a strong sense of smell, and Vulcans serving on Earth vessels initially required medication to lessen their sensitivity to the odor of humans. (It has not yet been established whether Vulcan males have the same sense of smell.)
Vulcans possess an inner eyelid, possibly analogous to a nictitating membrane, which protects their vision from bright lights, a physical adaptation that evolved due to the race's long-term exposure to desert conditions. Spock's inner eyelid was activated in the Original Series episode " Annihilate! (TOS episode)". Although the intense light Spock was exposed to caused temporary blindness, his inner eyelid prevented the blindness from being permanent. It is also mentioned in the Enterprise episode "The Forge"; during a journey across desert terrain, T'Pol says her inner eyelid protects her eyes in lieu of wearing sunglasses.
The internal layout of Vulcan organs differs somewhat from that of humans, with the Vulcan heart located roughly where the human liver is situated.
Although descended from the same ancestors as are Vulcans, the Romulans are an offshoot of the Vulcan species. They differ both in physiology and in behavioral customs. Over the centuries, Vulcans have developed a culture dedicated to the complete mastery of logic, learning to suppress their once-violent emotions in nearly every aspect of their existence. Romulans, on the other hand, have kept their violent natures.
A minority of Vulcans have a small V-shaped ridge above the bridge of their nose, similar to Romulans (among whom this attribute is common).
Periodically (every seven years for males and females, established in Star Trek and Star Trek: Enterprise), Vulcans experience an overpowering mating drive known as pon farr. Once triggered, Vulcans must have sexual contact with someone, preferably their mate, or else face insanity and death. If a mate is not available, there are two other options that will relieve the effects of the pon farr, the first being meditation, where the Vulcan must overcome the urge to mate through mental discipline. The other option is a ritual combat, usually fought over a potential mate, that can calm the rages of pon farr. However, both of these methods are only used as a last resort. When he experienced pon farr in the Delta Quadrant, Tuvok of Voyager made use of a holodeck simulation of his wife to relieve his condition. Pon farr can be also triggered by infection.
It was originally thought that Vulcans could only mate with Vulcans, but Vorik of Voyager pursued B'Elanna Torres during his pon farr, and T'Pol said she simply needed to mate with someone - anyone. The birth of Mr. Spock to a Vulcan father and a human mother, as well as the existence of an offspring of T'Pol and Trip Tucker in an alternate timeline, indicates that it is possible for Vulcans to conceive children with non-Vulcans, although this was initially thought to be impossible.
When Vulcans first experience pon farr has not been revealed; T'Pol, who was in her 60s when she experienced her premature pon farr, told Dr. Phlox that "it wasn't time"; it is not known if this means she had never experienced it previously, or that seven years had not passed since her last one. It has been suggested that bonding triggers the pon farr cycle.
When Spock experienced pon farr, it was made clear that only contact with his mate, T'Pring, would be sufficient for him to survive the condition. It's possible that some bondings are more powerful than others, allowing for no substitution. In Spock's case, however, his pon farr condition evaporated after he supposedly killed James Kirk and T'Pring announced her intention to wed another man (in the The Original Series episode "Amok Time"). There is little canon reference to Vulcans having siblings, with the exception of Spock, who has a half-brother, Sybok, (introduced in The Final Frontier), and Tuvok from Voyager, who has four children. Canon has never firmly established whether pon farr is a prerequisite for conceiving children. Until T'Pol underwent a virus-induced pon farr in the Star Trek: Enterprise episode, "Bounty", it was not known for certain that Vulcan females actually experienced it; T'Pring showed no apparent signs of the condition in "Amok Time".
Although it has been mentioned several times in the canon that pon farr occurs every seven years, it has never been established if this is truly a recurring event or only happens a limited number of times. There is, for example, no canonical reference to Spock ever experiencing pon farr again after the events of "Amok Time". However in the episode "This Side of Paradise", scientist Leila Kalomi hints at having had a special relationship with Spock some six years earlier, which may suggest an encounter between them during pon farr, leaving Leila with an unrequited love for Spock. Likewise, in the film The Search for Spock, the regenerated adolescent Spock went through at least two pon farrs at accelerated speed. Vulcan males and females are capable of engaging in sexual relations outside of pon farr. This can be surmised from Sarek's successful marriages to two known human women.
Although there are many races gifted with telepathic power, Vulcans seem to be totally immune to the psychokinetic effects of the Energy Barrier at the edge of the galaxy, which does affect humans with ESP (canon) and also Betazoids (non-canon, Q Continuum series of novels).
Though not canon, it has been witnessed that via touchless melding even a gaseous nebular entity can be affected ( The Animated Series - "One of Our Planets is Missing (TAS episode)").
Mind melds have been used to erase memories (as Spock performed on Captain Kirk in the TOS episode "Requiem for Methuselah"). Mind melds can also allow more than one mind to experience memories and sensations and sometimes even interact with the memories (as seen in the Voyager episode "Flashback").
The use of the mind meld was taboo for a period of time, perhaps because by the time of Surak, Vulcans were using their telepathic abilities to kill, or because of the apparent transmission of the incurable condition Pan'aar Syndrome between mind-melders. However, it was later learned that Pan'aar is a condition passed on by melders who are improperly trained, and although the Vulcan government of the mid-22nd Century claimed it was incurable, in fact the condition can be remedied by an experienced melder. Within a week of the Kir'shara incident in 2154, the stigma against mind-melders was evaporating and sufferers of Pan'aar were being cured in large numbers. By the mid 23rd century, the mind meld had become a fully accepted part of Vulcan society, and was even used once to rejoin Spock's katra with his healed physical body (see below).
As originally depicted (in TOS), mind-melds were considered dangerous and potentially lethal. Over the course of the original series, however, the element of risk was no longer mentioned, although it was revived on Enterprise with the revelation that Pan'aar Syndrome can be transmitted this way.
For a number of years it was held that not all Vulcans are genetically capable of initiating a mind-meld, such as T'Pol of Enterprise. However, the overthrow of the Vulcan High Command in 2154 revealed that this is not the case, and T'Pol conducted her first mind meld soon after.
It is also not known if all Vulcans possess contact telepathy. However, it has been stated (most recently in the Enterprise episode, "The Aenar") that Vulcans, on the whole, have some degree of telepathic ability.
Some Vulcans appear to have advanced mental abilities. Mr. Spock was once able to briefly control the mind of a prison guard, for example. He was also able to perform a limited mind meld with a Horta without actually making physical contact with the being (TOS episode "The Devil in the Dark"). It is made apparent that a touchless meld is limited in effectiveness compared to physical melds. Further evidence has shown that using both hands would allow the melder to dig deeper into the mind of the other, however doing so can be overwhelming if certain information being searched for is not present. Spock's greatest touchless mind meld was in 2271 when he melded with a representation of Lt. Ilia inside the V'GER entity ( The Motion Picture).
Mind melds are believed to be a shared experience in which something from each person involved is shared. Picard "shared" his composure with Sarek while Sarek more or less traded his emotional release at the hands of Bendaii Syndrome when they melded.
In the fourth season of Enterprise, as T'Pol began to explore her newfound mental powers, she discovered that she was experiencing a psychic link with Charles Tucker, sometimes over a range of many light-years during Tucker's brief posting aboard Columbia. This link was so strong that it rendered Tucker the only male aboard Enterprise immune to the mind-control powers of a group of Orion slave girls who tried to take over the ship. (Episode: "Bound") T'Pol deduced that she and Tucker established the link when they mated (as seen in "Harbinger"), however it is not known if the actual act of sexual coupling formed this link or if other factors (such as T'Pol's Trellium D-affected mental state at the time) came into play.
Syrran was fatally wounded by a lightning strike while escorting Jonathan Archer and T'Pol of the Earth Starfleet vessel Enterprise across a desert region called The Forge in 2154 prior to a short-lived conflict between Vulcan and Andoria. Syrran conducted a forced mind-meld on Archer and implanted the katra of Surak into Archer's mind before he died.
For a brief time, Archer found himself communicating with the long-dead Surak, and Surak began controlling - or at least strongly influencing - Archer's actions. Surak's katra was so strong that it resisted efforts to be transferred into T'Pau, but once the Syrrannites overthrew the Vulcan High Command, the katra allowed itself to be transferred into a Vulcan elder. The ultimate fate of Surak's katra remains unknown.
Katras have been referenced several other times in Star Trek lore, and it is indicated that even by the 24th Century not all Vulcans believe in them. It appears that only Vulcans of strong mental abilities are able to transfer their katra.
Katras can, on rare occasions, be returned to the body, effectively bringing an individual back from the dead. Such was the case with Mr. Spock who (in The Wrath of Khan) implanted his katra into the mind of Dr. Leonard McCoy prior to sacrificing his life to save the U.S.S. Enterprise. (Such was the strength of Spock's mental abilities that he was in fact able to function normally for several minutes despite depositing his "soul" elsewhere). Following Spock's death, McCoy began exhibiting Vulcan-like behavior and was briefly institutionalized. It was later discovered that Spock's body came to rest on the Genesis Planet after his burial in space, and was regenerated. He was recovered and was taken with McCoy to Mount Seleya on Vulcan where a Vulcan high priestess performed a ritual which removed the katra from McCoy and implanted it into Spock's regenerated body.
Subsequently, Spock recovered, although it took some time to retrain his mind to the point where it was prior to his death. Eventually Spock's original memories apparently reasserted themselves and he resumed his duties in Starfleet.
According to the Star Trek: Starfleet Academy comic book (which isn't considered canon), if a katra stays in a foreign mind for too long, the personality of the host can start to merge with that of the katra, potentially causing insanity. When the two personalities become intertwined, the katra cannot be removed, as happened to T'Prell, who died and gave her katra to her Romulan friend Selke, who was then captured and used as a spy for the Tal Shiar before she could return T'Prell's katra to Vulcan. There is some canonical support to this notion, however, as both McCoy and Archer experienced negative reactions to carrying katras, and McCoy's sanity was at issue during his experience.
It has been speculated that Spock might be shown performing a form of Fullara on Captain Kirk at the end of the TOS episode "Requiem for Methuslah" when his friend is in a state of emotional devastation and Spock conducts some form of mind-meld (the results of which are not revealed).
Some Vulcans have chosen not to follow the path of pure logic, and have instead chosen to embrace emotions. A group of renegade Vulcans who believed in this was encountered in the Enterprise episode "Fusion", while Spock's half-brother, Sybok (seen in the film The Final Frontier) was also fully emotional. An episode of Enterprise entitled "E²" featured an elderly T'Pol in an alternate timeline who had embraced emotion and allowed her half-human son, Lorian, to do likewise.
Many Vulcan children have pets, most notably domesticated sehlats, which are ferocious man-eaters in the wild. Both T'Pol and Spock had sehlats as children. Although one might consider keeping pets an emotional or even sentimental practice, it isn't viewed as such on Vulcan, and may instead be viewed as a practice to instill a sense of responsibility and maturity.
The speed at which a Vulcan matures "emotionally" (for lack of a better term) seems to vary. It has been established that, with a lifespan of more than two centuries, a Vulcan as old as 100 Earth years will still appear, and be considered, relatively young. Vulcans as young as their 30s and even 20s have been shown in mature roles in their society and acting older than their apparent ages (i.e. T'Pau, Mr. Spock). T'Pol, a Vulcan in her 60s, on the other hand, is still somewhat naïve and innocent compared to other Vulcans and acts very much like a rational human woman in her late 20s or early 30s.
Vulcans practice arranged marriage, in which a male and a female are usually matched as children, only to officially marry at a later date. Following the marriage, it is customary for the couple to remain on Vulcan for at least one Vulcan year before conducting off-world travel (presumably in order to produce offspring), though it is possible for the female to defer this requirement until a later date, upon negotiation with the male's family. The state of pon farr is not required for marriage to occur.
A Vulcan female can challenge the proposed bonding by calling for koon-ut-kalifee (spellings vary), in which a challenger for marriage engages the bonded male in a fight to the death. Alternately, the bonded male has the option of rejecting his intended bride and choosing another. It is acceptable for a male to "release" his mate from marriage (effectively the same as a divorce). It isn't known yet whether females have the same option.
The canon has not firmly established a timeline for Vulcan marriages. Spock was in his 30s (at least) before he was called to Vulcan for his marriage ceremony ("Amok Time"), while T'Pol was in her late 60s by the time her own marriage occurred, which she had put off for several years in order to remain aboard Enterprise.
It is customary for Vulcan children to undertake the kahs-wan ritual (sometimes spelled kaswahn), in which they are left to fend for themselves in the desert. Not all children survive the ordeal. T'Pol of the Enterprise NX-01 underwent the ritual, while Tuvok of Voyager experienced a variation known as the tal'oth. The kahs-wan was first introduced in the The Animated Series episode "Yesteryear" in which Spock's experience as a child was detailed; however, as the animated series is not considered canon, it has yet to be "officially" stated that Spock experienced the ritual.
Contrary to the Vulcan image of expressing no emotion, family bonds can be strong and affectionate just as they are for humans. Tuvok expressed his love for his wife on a few occasions (without actually using the term), Sarek openly expressed affection for both his human wives, and a clear bond of love existed between T'Pol and her mother, T'Les. In addition, Vulcans also value close friendships, even with more emotional beings as attested to by the relationship of Spock and James T. Kirk, and others.
Beginning with the Star Trek movies of the 1980s and continuing to today, a greater variety of names have been given to Vulcans beginning with other letters of the alphabet, such as Tuvok, Koss, Mestral, Valeris, and Xon to name a few (Xon being a Vulcan character created by Gene Roddenberry for his aborted Phase II series in the 1970s, and the actress Kim Catrall who played Valeris chose the character's name). There have also been numerous examples of female Vulcans possessing S...k formatted names or variations thereof, such as Saavik and Sakonna. There has been at least one case of a male Vulcan with a T' name. It has been suggested that the S...k and T' form of naming might reflect class distinctions.
Vulcans have only ever been identified in the Trek canon by one name; however, the Original Series episode "This Side of Paradise" has a scene in which Leila Kalomi says to Spock, "You never told me if you had another name." Spock replies, "You couldn't pronounce it." This suggests that Vulcans do have second names, though to date none have been revealed in canon.
In an alternate timeline (seen in the episode "Twilight"), she was promoted to Captain and commanded Enterprise for several years, although it has yet to be established whether a similar promotion occurs in the real timeline.
The best-known Vulcan to serve in Starfleet was Mr. Spock, who served aboard the Enterprise NCC-1701 and NCC-1701-A under Captains Christopher Pike and James T. Kirk. Spock eventually rose to the rank of Captain, briefly commanding the NCC-1701 when it was used as a training vessel.
There is a misconception that Spock was the first Vulcan to serve in Starfleet. This is contradicted by T'Pol's appointment, and in fact, an examination of all The Original Series episodes and films will fail to uncover any such reference. Spock was not even the first to attend Starfleet Academy, since during the time of The Original Series, an entire Federation starship of Vulcans, the Intrepid, was destroyed.
The films introduced several more Vulcans, including Commander Sonak ( The Motion Picture), Lieutenant Saavik ( The Wrath of Khan, The Search for Spock, The Voyage Home) and Lieutenant Valeris ( The Undiscovered Country).
Vulcan Starfleet characters appear many times in later television series:
Many Vulcans are skilled in a self-defense technique known as the "Vulcan nerve pinch" or "neck pinch", which targets a precise location on the neck, rendering the victim unconscious (sometimes instantly, sometimes after a short delay depending on the subject). Although the mechanics of the pinch have never been explained in on-screen canon, it has been speculated that it can be done by applying pressure over baroreceptors of the carotid sinus at the base of the humanoid neck though other fanon speculations exist involving Vulcan mental abilities. While practiced mainly by Vulcans, it is not exclusive to their race; for example, Data and Jean-Luc Picard have also mastered the technique, the latter probably acquiring it during his mind-meld with Sarek. Likewise, Jonathan Archer learned the technique as a result of receiving the katra of Surak though it is unknown whether his knowledge of it continued following the removal of the katra. Additionally, Dr. McCoy attempted to use the "neck pinch" while carrying Spock's katra in The Search for Spock, but was less successful, perhaps due to an unsteadiness in his hands later brought up when he was on trial alongside Capt. James T. Kirk in The Undiscovered Country. The neck pinch was actually conceived by Leonard Nimoy who felt Spock's nature wouldn't allow for violence and thus introduced the famous non-lethal maneuver.
The "Vulcan Death Grip" was a bluff used in original series episode "The Enterprise Incident". Spock pretended to administer it to Captain Kirk, convincing Romulan onlookers (apparently unfamiliar with Vulcan techniques) that Kirk had been killed. In fact, Spock had only used a particularly powerful nerve pinch, putting Kirk into a deep unconsciousness that resembled death. Kirk awoke a short time later with head and neck pain but no lasting injury.
There is, however, a form of killing strike called Tal-Shaya, revealed in the original series episode "Journey to Babel", which involves snapping the victim's neck quickly and painlessly.
In the 22nd Century, Vulcans, seemingly, also lived by the ethic of telling the truth, but were very willing to lie when necessary. Early in the fourth season of Enterprise, Captain Archer says "Vulcans can lie with the best of them", with the Vulcan High Command's cover-up regarding a secret listening post at P'Jem often cited as a prime example. T'Pol, although initially hesitant to tell falsehoods, eventually began to embrace the idea that telling lies was sometimes necessary, although she also began to lie to her captain regarding her Trellium-D addiction. Following the "kir'shara" incident, T'Pol began to adopt more of Surak's teachings, presumably including the prohibition on lying, although it has yet to be seen whether this is the case.
The episode "Operation: Annihilate" suggested a fairly bright star, such as Sirius or Fomalhaut, and at least one Trek-fan article suggested Fomalhaut since the name Vulcans would be preferable over Fomalhautians.
When Trip Tucker remarks on making a 16-light-year trip to Vulcan, its distance is firmly established. The star 40 Eridani happens to be 16 light years from Sol. This star system is also mentioned in the James Blish novelization of "Tomorrow is Yesterday", but not used in the teleplay of that story.
Although 40 Eridani has no A-type stars like Sirius, there may be other factors that cause Vulcan's sun to appear very bright. 40 Eri A is a K1 star; 418 AU away, with an average separation of 35 AU, are 40 Eri B, a white dwarf of spectral class DA4, and 40 Eri C, a red dwarf of class M4.5. The nature of B and C precludes any possibility of habitable planets.
It is speculated on the official website startrek.com that a species that was known on Earth as the gods of ancient Rome or the gods of ancient Greece traveled to ancient Vulcan, thus influencing both those that would later become Romulans as well as those who remained on Vulcan. Vulcans subsequently practiced a form of paganism; this can be seen in gods of War gods, Peace gods, and Death gods depicted on the Stone of Gol, as well as the celebration of Rumarie. (The DVD commentary for "Amok Time" says that TOS writer D.C. Fontana named the Vulcan god of death "Shariel"; a bust of whom is seen in Spock's quarters.)
In about 850 BCE, Vulcans established a monastery on the planet P'Jem.
In about the 4th century CE, Vulcans emerged from their violent tendencies and civil wars under a philosopher named Surak. Surak advocated the suppressing of emotion in favor of logic. This period was known as the Great Awakening and much of present-day Vulcan philosophy emerged from this period. According to the Star Trek: New Frontier book series (which is not considered canon), the Great Awakening caused many wars and conflicts to occur amongst various Vulcan tribes; those who supported Surak's cause would become separated from friends and even close family members who did not. For cases in which parents were separated by this, a ritual was created called the ku'nit ka'fa'ar, a battle to determine which parent would maintain their child.
Despite the acceptance of Surak's teachings, generations of imperfect copies of his writings, combined with changes in the Vulcan language over time resulted in a diluted form of the culture he instituted.
A great deal of literature from the Star Trek Expanded Universe (in particular the novel The Romulan Way by Diane Duane and Peter Morwood) has stated that the leader of the Vulcan-Romulan migration was a close follower of Surak's named S'Task. S'Task would see the founding of the Romulan Empire but was killed by political factions shortly thereafter. In Duane's personal series of Star Trek novels, an alternative, self-name for the Romulans is given, that being Rihannsu, which was also picked up by some other Star Trek novelists prior to The Next Generation rendering that continuity invalid in canon.
In 1930, Spock of Vulcan was one of three Starfleet officers from the 23rd Century who travelled back in time to New York City, in the original series episode "The City on the Edge of Forever". To date, this is the earliest confirmed contact between humans and Vulcans, although in the Vulcan timeline it occurred long after First Contact. Spock would also briefly travel to Earth in 1968 on a mission, in " Earth"; accidentally in 1969, in "Tomorrow is Yesterday"; and again in 1986, in The Voyage Home. (Technically speaking, these three events occurred after the founding of the Federation, but are included here as they constitute pre-First Contact encounters with contemporary humans.)
Vulcan first contact with the Andorian race was promising, but relations soured in time. The threat of mutual annihilation existed as early as the 1950s.
In 1957, the launch of Sputnik I, Earth's first artificial satellite, was observed by a Vulcan vessel that subsequently crashed on the planet, marooning several crewmembers for a number of months in Carbon Creek, Pennsylvania; this constituted the first true contact between humans and Vulcans, but it was never recorded as such as the humans were unaware of the alien nature of their guests. One Vulcan, Mestral, chose to stay on Earth: his fate has yet to be revealed...at least, this is the story told by T'Pol, although it isn't known if she was being serious or not.
In 2044 the Romulans and Vulcans suspended hostilities in their hundred-year war. It is unclear whether the two groups knew they were fighting their kinsmen.
In 2053 the Vulcans made first contact with the Arkonians.
On April 5, 2063 Vulcans and Humans made official first contact following the successful test of Earth's first warp-powered starship, as depicted in First Contact.
In 2097 the Vulcans annexed the Andorian planetoid Weytahn and renamed it Pan Mokar.
In 2105 the Vulcans and Andorians agreed to a compromise over the planet Weytahn/Pan Mokar. Still, tensions continued due to the threat of mutual annihilation.
In 2151, Subcommander T'Pol joined the crew of the Earth Starfleet vessel Enterprise NX-01, within a couple of weeks setting a Vulcan endurance record for serving aboard a human vessel. In 2154, T'Pol became a commissioned officer with Starfleet.
On August 12, 2161, Vulcan became one of the founding members of the United Federation of Planets.
There is a fanon site devoted to hypothesizing the logic of Surak. It is here: http://www.surak.org.
The Vulcans appear to have three written languages; two of which can be used separately or in combination with each other:
In the The Next Generation episode "Reunification II", Spock meets a Romulan youth who shows him children's toys -- marble-sized objects in various shapes -- marked with symbols identified as "the syllabic nucleus of the Vulcan language." Spock is intrigued that some Romulans want their children to learn to read Vulcan; the boy says "to prepare for the day when we will live again with our Vulcan cousins."
Vulcans are fluent in English, usually speaking it with an American-like accent, though occasionally British and Slavic accents have been heard. There is some debate among fans, however, as to whether the accent heard isn't a creation of the universal translator used at the time. The character of T'Pau, for example, speaks with only a faint accent as a young woman (as seen in the Enterprise episode "Awakening"), yet by the time she is an elder (as seen in the The Original Series episode "Amok Time"), she speaks with a thick accent, being played by a Hungarian actress. It has been pointed out that humans have been known to change accents over the course of a lifetime, so the same may hold true for Vulcans; although the difference in accents may just have been the result of a different model of Universal Translator.
Fictional extraterrestrial species | Star Trek races | Vulcans
Vulkánci | Völker im Star-Trek-Universum#Vulkanier | Vulcano (Star Trek) | Vulcain (Star Trek) | Vulcaniani | Vulcan (Star Trek) | バルカン (スタートレック) | Wolkanie | Vulcano (Star Trek) | Vulkánci | Vulcan (Star Trek)
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