Traveler in Main Engineering, remastered

A Traveler from this species

The Traveler's species were an unnamed species of which one representative, The Traveler, was encountered by Starfleet in the 2360s. The traveler had exceptional abilities based on thought and with exceptional implications in propulsion, which he claimed others of his kind also possessed. (TNG: "Where No One Has Gone Before")

According to The Traveler, this species had not sought contact before this time because before that, because [the Federation cultures] had been deemed uninteresting and not meriting serious attention. (TNG: "Where No One Has Gone Before")

According to Starfleet records, the Traveler was from Tau Alpha C, a planet the inhabitants of which were known to the Enterprise computer. When in 2367 Beverly Crusher tried to find him or another from his race, she directed the computer to first search for inhabitants of this planet, and then try to reach the planet. (TNG: "Where No One Has Gone Before", "Remember Me") A few years later, Crusher described the Traveler as being from Tau Ceti. (TNG: "Journey's End") The Traveler himself described himself as exploring "[our] reality" (TNG: "Where No One Has Gone Before")

While Tau Alpha C was consistently described as very far away, Tau Ceti is a real star among those closest to Earth. This, along with the fact that Tau Ceti was regularly mentioned as a place Federation citizens went whereas the Traveler's species was said to have been too disinterested to have had contact with the Federation until recently before 2364, complicates reconciliation of the two references.