Satellite: Difference between revisions
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==History== | ==History== | ||
The first artificial satellite was [[Sputnik|Sputnik 1]], launched by the [[Soviet Union]] on [[4 October]] [[1957]]. This triggered the [[Space Race]] between the Soviet Union and the [[United States]]. | The first artificial satellite was [[Sputnik|Sputnik 1]], launched by the [[Soviet Union]] on [[4 October]] [[1957]]. This triggered the [[Space Race]] between the Soviet Union and the [[United States]]. | ||
==Orbit types== | |||
===Low Earth Orbit=== | |||
===Medium Earth Orbit=== | |||
===Geosynchronous Orbit=== | |||
===Moliyna Orbit=== | |||
==Applications== | |||
===Engineering test=== | |||
===Scientific research=== | |||
===Multipurpose and manned=== | |||
===Communications=== | |||
===Navigation=== | |||
===Weather=== | |||
===Intelligence=== | |||
====[[Imagery intelligence]]==== | |||
====[[Communications intelligence]]==== | |||
====[[Electronic intelligence]]==== | |||
====[[Measurement and signature intelligence]]==== | |||
==Engineering challenges== | |||
===Weight=== | |||
===Power=== | |||
===Cooling=== | |||
===Orbital drag and station-keeping=== | |||
Revision as of 00:46, 14 May 2008
In the context of spaceflight, satellites are objects which have been placed into orbit by human endeavor. They are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon.
History
The first artificial satellite was Sputnik 1, launched by the Soviet Union on 4 October 1957. This triggered the Space Race between the Soviet Union and the United States.