Geostationary balloon satellite
Stratobus airship 
Geostationary balloon satellite 
Geostationary airship satellite 
High-altitude airship satellite Geostationary balloon satellites (GBS) are proposed high-altitude balloons that would float in the mid-stratosphere (60,000 to 70,000 feet (18 to 21 km) above sea level) at a fixed point over the Earth's surface and thereby act as an atmospheric satellite. At those altitudes, air density is around 1/15 to 1/20[29] of what it is at sea level. The average wind speed at these levels is less than that at the surface.[29][30] A propulsion system would allow the balloon to move into and maintain its position. The GBS would be powered with solar panels.
A GBS could be used to provide broadband Internet access over a large area. Laser broadband would connect the GBS to the network, which could then provide a large area of coverage because of its wider line of sight over the curvature of the Earth and unimpeded Fresnel zone.[31][32][33]
Arizona space balloon port
World View Enterprises built and operates a balloon spaceport (high-altitude balloon port) in Pima County, Arizona.[34]
See also
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