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

Artificial satellites are used for many purposes, including communications, navigation, gathering weather information, creating maps and even spying. Artificial satellites come in several forms, including telescopes and ... More » Science Astronomy

Although scientists use the term celestial body quite broadly, when they refer to a celestial body orbiting another body they are generally talking about natural satellites, or moons, orbiting a larger body such as a pla... More » Science Astronomy
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As of 2015, India has launched six major types of satellites into space: communication, Earth observation, navigation, experimental, small and student satellites. Scientific spacecrafts were also sent to space primarily ... More » Science Astronomy

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

Math is used in astronomy to calculate routes for satellites, rockets and space probes. In addition, math is used in the global positioning system, for transmitting messages when data is compressed, and for coding the im... More » Science Astronomy

Astra 28.2°E is the name for the collection of Astra communications satellites co-located at the 28.2° East position in the Clarke Belt that are maintained and controlled by the Société Européenne des Satellites, based i... More » Science Astronomy