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An Earth ellipsoid or Earth spheroid is a mathematical figure approximating the Earth's form, used as a reference frame for computations in geodesy, astronomy, and the geosciences. Various different ellipsoids have been used as approximations. It is a spheroid (an ellipsoid of revolution) whose minor axis (shorter diameter), which connects the ...
Tern Island (Hawaii) / 23.870; -166.284. Tern Island is a coral island located near French Frigate Shoals in the Northwestern Hawaiian Islands. It is in the Hawaiian Islands National Wildlife Refuge. It is approximately 490 miles (790 kilometers) west-northwest of Oahu . The island provides a breeding habitat to 18 species of seabirds, green ...
The Ghana Satellite Earth Station is the largest satellite station in Ghana. The satellite station is situated at Kuntunse, on the Accra - Nsawam Road, [1] [2] a suburb of Accra in the Greater Accra Region. The satellite station has five receiver dishes: The station is managed by Vodafone Ghana, after the Ghana government partnered with the ...
Herodotus rejected the prevailing view of most 5th-century BC maps that the Earth is a disk surrounded by ocean. In his work he describes the Earth as an irregular shape with oceans surrounding only Asia and Africa. He introduces names such as the Atlantic Sea, and the Erythrean Sea, which translates as the "Red Sea". He also divided the world ...
The gravity of Earth, denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation (from mass distribution within Earth) and the centrifugal force (from the Earth's rotation ). [2] [3] It is a vector quantity, whose direction coincides with a plumb bob and strength or magnitude is given by the norm .
The Wideband Global SATCOM system ( WGS) is a high capacity United States Space Force satellite communications system planned for use in partnership by the United States Department of Defense (DoD), Canadian Department of National Defence (DND) and the Australian Department of Defence. [1] The system is composed of the Space Segment satellites ...
History. It was founded in 1958, the first of China's four spaceports. As with most Chinese launch facilities, it is remote and generally closed to foreigners. The Satellite Launch Center is a part of Dongfeng Space City ( 东风航天城 ), also known as Base 10 ( 十号基地) or Dongfeng base ( 东风基地 ). The Dongfeng site also includes ...
Geostationary orbit. A 5° × 6° view of a part of the geostationary belt, showing several geostationary satellites. Those with inclination 0° form a diagonal belt across the image; a few objects with small inclinations to the Equator are visible above this line. The satellites are pinpoint, while stars have created star trails due to Earth's ...