The Arcturians are an extraterrestrial species known to interact with the human race. Little is known about them, except that they were the first sentient alien species encountered by mankind and that humanity has established some sort of interspecies trade with them. It seems likely that they are basically humanoid in form, as they are sexually compatible (at least in a recreational sense) with humans. Arcturians are also the source of Arcturian Klerhaige, a disease that is communicable to human beings.
During the USS Sulaco's mission to Acheron, Private Frost mentioned sleeping with Arcturians on a previous operation. Private Spunkmeyer subsequently pointed out that the one Frost had was male, to which Frost responded, "Doesn't matter when it's Arcturian, baby!" It therefore seems likely that Arcturians have very little differentiation between sexes.
Behind the scenesEdit
In reality, Arcturus is the brightest star in the northern celestial hemisphere. With a visual magnitude of −0.04, it is the fourth brightest star in the night sky, after −1.46 magnitude Sirius, −0.86 magnitude Canopus, and −0.27 magnitude Alpha Centauri. It is a relatively close star at only 36.7 light-years from Earth, and, together with Vega and Sirius, one of the most luminous stars in the Sun's neighborhood.
- Aliens (mentioned only)
- Alien: Sea of Sorrows (mentioned only)
- Alien: River of Pain (mentioned only)