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A satellite is any object that orbits another object (which is known as its primary). All masses that are part of the solar system, including the Earth, are satellites either of the Sun, or satellites of those objects, such as the Moon.

Definition of a Satellite


It is not always a simple matter to decide which is the "satellite" in a pair of bodies. Because all objects with mass are affected by gravity, the motion of the primary object is also affected by the satellite. If two objects are sufficiently similar in mass, they are generally referred to as a binary system rather than a primary object and satellite; an extreme example is the 'double asteroid' 90 Antiope. The general criterion for an object to be a satellite is that the center of mass of the two objects is inside the primary object.

In popular usage, the term satellite normally refers to an artificial satellite, which would be a man-made object that orbits the Earth (or another body). However, scientists may also use the term to refer to natural satellites, or moons. In general word usage, "natural satellite" is the term used to refer to moons.

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What name is given to blood sucking bugs that live on earth's only natural satellite? Lunatics!
Kingdad (Kingdad) Sun, 27 Dec 2009 21:34:09 -0000
What name is given to blood sucking bugs that live on earth's only natural satellite? Lunatics!
Satellite Direct - 5 Star overall user experience.
webtv2pc (Dan Morgan) Sun, 27 Dec 2009 21:33:44 -0000
Satellite Direct - 5 Star overall user experience.
playing satellite heart. Nice song :)
sarah128199 (Sarah) Sun, 27 Dec 2009 21:32:56 -0000
playing satellite heart. Nice song :)
Watch Live TV with Satellite Direct! Visit My Webpage To Find How!
Sat_Direct (Satellite Direct) Sun, 27 Dec 2009 21:32:38 -0000
Watch Live TV with Satellite Direct! Visit My Webpage To Find How!
No Satellite signal being received! Now what? Parents went to bed, can't even socialize. "Hello Mr. Chair! How are you?"
MaxOliverBlazer (Max Oliver Partridge) Sun, 27 Dec 2009 21:32:21 -0000
No Satellite signal being received! Now what? Parents went to bed, can't even socialize. "Hello Mr. Chair! How are you?"
No subscritption or monthly fees, no hardware to install, no bandwith limit on your pc satellite viewing. http://bit.ly/phSs2
AffiliateSeller (Isabel Quevedo) Sun, 27 Dec 2009 21:31:40 -0000
No subscritption or monthly fees, no hardware to install, no bandwith limit on your pc satellite viewing. http://bit.ly/phSs2

 
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CenterNet: The Academic Health Center Television Network - Live, interactive satellite network providing continuing education programming for health-care professionals. Includes profile and partner information.

500 God TV - Broadcasts Christian television across Europe and South Africa, incorporating the God Channel and Revival Channel. Includes information on programming and access.

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Ellen will talk via satellite with CNNs ANDERSON COOPER
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