Satellite: Difference between revisions
Jump to navigation
Jump to search
imported>Howard C. Berkowitz |
Pat Palmer (talk | contribs) m (Text replacement - "United States" to "United States of America") |
||
| Line 4: | Line 4: | ||
==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 of America]]. | ||
==Applications== | ==Applications== | ||
Revision as of 13:12, 2 February 2023
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. Depending on the application, they use different types of satellite orbits.
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 of America.
Applications
Engineering test
Scientific research
Multipurpose and manned
Communications
Weather
Intelligence
Imagery intelligence
Communications intelligence
Electronic intelligence
Measurement and signature intelligence
Engineering challenges
Weight
Power
The most common means of providing electric power to satellites is a combination of photovoltaic cells and batteries.