A parsec (or parallax arc-second) is a unit of astronomical measurement, equal to roughly 3.26 light years. It was in common use by the United Federation of Planets in the 23rd and 24th centuries. External linksEdit Parsec article at Memory Alpha, the canon Star Trek wiki. Parsec article at Wikipedia, the free encyclopedia. Retrieved from "https://stexpanded.fandom.com/wiki/Parsec?oldid=213273" Categories: Measurements Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.