Difference between revisions of "Satellite"
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| − | A '''satellite''' is something that orbits around a [[planet]], | + | A '''satellite''' is something that orbits around a [[planet]], for example, a [[moon]], or a man-made object that facilitates [[telecommunications]]. |
| − | + | An example of a man-made satellite is a [[radio]] relay station that orbits the [[earth]]. A complete satellite communications system also includes [[earth]] stations that communicate with each other via the satellite. The satellite receives a signal transmitted by an originating earth station and retransmits that signal to the destination earth station(s). Satellites are used to transmit telephone, television and other data signals originated by common carriers, broadcasters and distributors of cable [[television]] program material. | |
In [[history]], the term "satellite nation" refers to those nations under the sphere of influence of the [[Soviet Union]], or under the "[[Iron Curtain]]". | In [[history]], the term "satellite nation" refers to those nations under the sphere of influence of the [[Soviet Union]], or under the "[[Iron Curtain]]". | ||
[[category:astronomy]] | [[category:astronomy]] | ||
[[category:Telecommunications]] | [[category:Telecommunications]] | ||
Revision as of 01:15, January 13, 2008
A satellite is something that orbits around a planet, for example, a moon, or a man-made object that facilitates telecommunications.
An example of a man-made satellite is a radio relay station that orbits the earth. A complete satellite communications system also includes earth stations that communicate with each other via the satellite. The satellite receives a signal transmitted by an originating earth station and retransmits that signal to the destination earth station(s). Satellites are used to transmit telephone, television and other data signals originated by common carriers, broadcasters and distributors of cable television program material.
In history, the term "satellite nation" refers to those nations under the sphere of influence of the Soviet Union, or under the "Iron Curtain".