is flattened at the poles

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• Phantom of the Poles — The Phantom of the Poles is a book written by William Reed, and published in 1906. It attempts to explain mysterious phenomena, reported by polar explorers, by postulating that the Earth is in fact hollow, with holes at its poles. Phenomena to be …   Wikipedia

• Volume of the Earth — The volume of the Earth is about 1,080,000,000,000,000,000,000 m3, or = 1.08 times;1021 m3, in scientific notation. See 1 E+21 m³ for other things of about this volume. Calculation Earth is an oblate spheroid, resembling a sphere flattened at the …   Wikipedia

• Figure of the Earth — An oblate spheroid Geodesy …   Wikipedia

• History of the Earth — For the history of modern humans, see History of the world. Geological time put in a diagram called a geological clock, showing the relative lengths of the eons of the Earth s history The history of the Earth describes the most important events… …   Wikipedia

• Foreign policy of the United States — United States This article is part of the series: Politics and government of the United States …   Wikipedia

• French Geodesic Mission — The French Geodesic Mission (also called the Geodesic Mission to Peru, First Geodesic Mission and the Spanish French Geodesic Mission) was an 18th century expedition to Ecuador carried out for the purpose of measuring the roundness of the Earth… …   Wikipedia

• Torne Valley — The Torne Valley or Torne River Valley (Finnish: Tornionjokilaakso , Swedish: Tornedalen ) lies at the border of Sweden and Finland. It is named after the Torne River flowing through the valley and into the Gulf of Bothnia. Geographically the… …   Wikipedia

• 45th parallel north — The 45th parallel north is a circle of latitude that is 45 degrees north of the Earth s equatorial plane. The 45th parallel north is often called the halfway point between the Equator and the North Pole, but the true halfway point is actually… …   Wikipedia

• Palomar Testbed Interferometer — The Palomar Testbed Interferometer is a near IR, long baseline stellar interferometer located at Palomar Observatory in north San Diego County. It was built by Caltech/JPL and is intended to serve as a testbed for developing interferometric… …   Wikipedia

• geoid — geoidal, adj. /jee oyd/, n. 1. an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents. 2. the geometric figure formed by this surface, an ellipsoid flattened at the poles. [1880 85; < Gk… …   Universalium

• Altair — This article is about the star in the constellation Aquila. For other uses, see Altair (disambiguation). Altair …   Wikipedia