Artificial Satellite

Artificial satellites zipping through space.

  • Satellites are objects that orbit another larger object in space, launched by humankind and there are hundreds, if not thousands of satellites currently orbiting earth.
  • Sputnik 1 was the first artificial satellite to be successfully launched into space, by the USSR (Soviet Union) on 4 October 1957.
  • Satellites are launched into space by rockets, and orbit up to and beyond 35,786 kilometres (22,236 miles) in altitude.
  • Satellites can be very small, 10 cm (4 inch) cubes, or very large space stations, the largest being the International Space Station.
  • Satellites can be in networks of multiple objects, such as the Global Positioning System (GPS) network or a digital or media systems.
Satellite, Out of Space, sideways, Earth, Boeing to build 4 satellites for Asia Broadcast Satellite/Satmex team, Ten Random Facts, Flickr
Satellite
Image courtesy of The Boeing Company/Flickr
  • The earth is not the only body that has orbiting satellites, as the sun, the moon and other neighbouring planets have orbiting artificial objects.
  • Satellites can be destroyed by missile shootings, as Russia, the United States and China have all proven.
  • Satellites have many capabilities and purposes, from navigation, monitoring and observation purposes including the weather, communication facilities, photography uses and space station homes.
  • Satellites rarely collide in space, as they are launched into a satellite-avoiding orbit, and the first accidental collision was in 2009.
  • Satellites are usually fitted with technology like computers that make use of radio signals to send or transmit data to earth.
Bibliography:
Satellite, 2013, Wikipedia, <http://en.wikipedia.org/wiki/Satellite>
What is a Satellite?, 2010, NASA, <http://www.nasa.gov/audience/forstudents/5-8/features/what-is-a-satellite-58.html>

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