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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 »

www.reference.com 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 »

www.reference.com 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 »

www.reference.com Science Astronomy Space Travel
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The most common kind of satellite coordinates are GPS coordinates, which work by receiving signals from a "constellation" of 27 satellites in known positions, and determining the latitude and longitude of the receiving i... More »

www.reference.com Science Astronomy

Satellites remain in orbit because the momentum of the satellite and the pull of earth's gravity are balanced. Gravity is an attraction toward the center of the earth. Momentum is the speed or velocity at which an object... More »

www.reference.com Science Astronomy

Active satellites include the International Space Station and the Norwegian Coastal Administration's AISSat-2 low Earth orbit satellite, while active space probes include NASA's Voyager I and Voyager II probes, as of 201... More »

www.reference.com Science Astronomy

Saturn orbits the sun in approximately 29.7 Earth years. It orbits the sun in an elliptical path, just as all of the planets in the solar system do. More »

www.reference.com Science Astronomy