satellite

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Gennaio is Italian How many artificial satellites orbited the Earth, as of 2011?
Artificial satellites are working above this height and they would be able to see the whole Earth.
Images of Earth gathered from artificial satellites placed in the orbit have become a powerful scientific tool to understand Earth and its environment.
Since then Arabsat has launched more than 15 artificial satellites. Today, our fleet includes six cutting-edge satellites in five orbital positions.
Contributions by Tim Cooper (comets and meteor showers), Greg Roberts (artificial satellites), Chris Stewart (televangelism) and Chris de Coning (historical material) are gratefully acknowledged.
The problem must be left to future eclipses or, perhaps, to observations from artificial satellites....
Optical Characteristics of Artificial Satellites SID 70-55 1 July 1970
Renzetti [14] further presented the history of complex, intricate, and branched attempts made by several researchers to measure lense thrilling effects in the terrestrial gravitational field with artificial satellites. Tests were conducted with different combinations of satellites, that is, LAGEOS, perigee of LAGEOS-2, CHAMP, and GRACE models.
Part of his work there involved calculations of the motion of artificial satellites.
Following an overview of the history of artificial satellites, Maini and Agrawal (both of Laser Science and Technology Centre, Defence Research and Development Organization, Ministry of Defence, India) cover core concepts and principles; communication, scientific, navigational, and military applications; and satellites' pivotal role in remote sensing for the analysis of data acquired from a distance.
The development of artificial satellites during the latter half of the 20th century gave us an unprecedented platform for looking down on the Earth from above.