artificial satellites

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• Artificial satellites in retrograde orbit — Artificial satellites are rarely placed in retrograde orbit. This is partly due to the extra velocity required to go against the direction of the rotation of the earth. ExamplesIsrael has successfully launched five Shavit satellites in retrograde …   Wikipedia

• Timeline of artificial satellites and space probes — This Timeline of artificial satellites and space probes includes unmanned spacecraft including technology demonstrators, observatories, lunar probes, and interplanetary probes. First satellites from each country are included. Not inclued are… …   Wikipedia

• Satellites artificiels — Satellite artificiel Pour les articles homonymes, voir satellite et Sat. Le satellite de météorologie GOES O avant son lancement en …   Wikipédia en Français

• Satellites scientifiques — Satellite artificiel Pour les articles homonymes, voir satellite et Sat. Le satellite de météorologie GOES O avant son lancement en …   Wikipédia en Français

• Artificial Neural Network — Réseau de neurones Pour les articles homonymes, voir Réseau. Vue simplifiée d un réseau artificiel de neurones Un réseau de neurones artificiel est un modèle de c …   Wikipédia en Français

• Satélite artificial — Swift. Un satélite artificial es una nave espacial fabricada en la Tierra y enviada en un vehículo de lanzamiento, un tipo de cohete que envía una carga útil al espacio exterior. Los satélites artificiales pueden orbitar alrededor de lunas,… …   Wikipedia Español

• Earth observation satellites transmission frequencies — The earth is constantly being monitored by a great number earth observation satellites. These artificial satellites have onboard sensors from which they gather data. The data is transmitted back to earth via radio frequency. This article lists a… …   Wikipedia

• Satellite — This article is about artificial satellites. For natural satellites, also known as moons, see Natural satellite. For other uses, see Satellite (disambiguation). An animation depicting the orbits of GPS satellites in medium Earth orbit …   Wikipedia

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• Natural satellite — Moons redirects here. For other uses, see Moons (disambiguation). Two moons: Saturn s moon Dione occults Enceladus A natural satellite or moon is a celestial body that orbits a planet or smaller body, which is called its primary …   Wikipedia

• Space Race — For a discussion of all spaceflight programs to date, see History of spaceflight. For a list of key events, see Timeline of space exploration. For other uses of the term, see Space Race (disambiguation). A replica of Sputnik 1, the world s… …   Wikipedia