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Physics ­ Satellites

Geostationary Orbit

Geostationary Orbit is one in which the satellite is always in the same position with
respect to the rotating Earth. The satellite orbits at an elevation of approximately
35,790 km because that produces an orbital period (time for one orbit) equal to the
period of…

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comparisons. The orbital plane of a sun-synchronous orbit must also rotate
approximately one degree per day to keep pace with the Earth's surface. Polar orbits
are often used for earth-mapping, earth observation, and reconnaissance satellites,
as well as for some weather satellites. The disadvantage to this orbit is that no…

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Telescope style Ritchey-Chretien reflector

Wavelength Optical, ultraviolet, near-infrared

Diameter 2.4 m (7 ft 10 in)

Collecting area 4.5 m2 (48 sq ft)[3]

Focal length 57.6 m (189 ft)




Hubble Space Telescope had an initial price
tag was $1.5 billion (US dollars).
Moreover, the cost did not stop
there, but continued…

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