a large area of coverage because of its wider line of sight over the curvature of the Earth and unimpeded Fresnel zone. Arizona space balloon port World View Enterprises built and operates a balloon spaceport (high-altitude balloon port) in Pima County, Arizona. See also ARCADE Atmospheric satellite BRRISON Columbia Scientific Balloon Facility Flight endurance record Geostationary satellite High-altitude platform station Internet.org Project Loon Tethered blimp World View Enterprises PongSat References External links Spacenear.us Tracker display of current balloon launches (archived 26 December 2008) NASA Goddard Space Flight Library Balloon technology collection (archived 13 February 2013) StratoCat – Stratospheric balloons. History and present of their use in the fields of science, military and aerospace Near Space book at Parallax.com (archived 12 October 2008) California Near Space Project – Silicon Valley based ARHAB group with first successful transatlantic balloon Stratofox Aerospace Tracking Team – tracking team for CNSP and other balloons and rockets (archived 12 February 2003) Balloons (aeronautics) Amateur radio Balloon-borne experiments