The Greater Green River Intergalactic Spaceport is a small public use airstrip about five miles south of Green River, Wyoming on a mountain known as South Hill. It opened in 1963.FacilitiesThe airport covers 400acre at an elevation of 7,182 feet (2,189 m). It has one runway, 04/22, 5,800 by 130 feet (1,768 x 40 m) gravel. The runway is unattended, with no buildings or facilities, except a windsock. The runway does not have a clear line of sight from the runway ends. Communications are through CTAF and most of the services are from nearby Rock Springs - Sweetwater County Airport.In the year ending April 30, 2016 the airport had 300 aircraft operations, all general aviation. No aircraft were then based at the airport.SpaceportOn July 5, 1994 Resolution R94-23 of the Green River city council designated this landing field as the "Greater Green River Intergalactic Spaceport", for inhabitants of Jupiter who might wish to take sanctuary in Green River in the event their planet is threatened by collisions from comets or meteors, in apparent reference to the contemporary Comet Shoemaker–Levy 9 impact.
