Sun-synchronous orbits keep a satellite positioned so the time remains constant across any latitude, while geostationary orbits keep a satellite in the same position night or day. Sun-synchronous and geostationary orbits... More » Science Astronomy

Most common geostationary satellites are either weather satellites, communication satellites relaying signals between two or more ground stations and satellites that broadcast signals to a large area on the planet. The b... More » Science Astronomy

A satellite requires a speed of 17,450 miles per hour in order to maintain a low Earth orbit. Satellites in higher orbits travel more slowly; for example, a geostationary satellite only orbits at 6,858 miles per hour. More » Science Astronomy Space Travel
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