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2 10 feet (3 m) TECHNICAL SPECIFICATIONS: GALILEO SATELLITE First launched 2006 Orbital altitude 14,300 miles (23,000 km) Orbital period 14 hours Organization European Union Final number in orbit 30 (27 active) PHASE 2 Using the coordinates of a second satellite, the receiver can determine the user's location as being anywhere along the intersection of the two spheres. SATELLITE A The European Galileo project (which placed its first experimental satellite into orbit in late 2005) is a satellite navigation system that will be based on a constellation of 30 satellites (27 operational and 3 spares) in three medium Earth orbits in different planes to ensure global coverage.

OPENING THE PANELS They open in orbit. 3,744 They begin to be deployed, opening upward. THE NUMBER OF CELLS IN EACH PANEL FOR CONVERTING SOLAR ENERGY INTO ELECTRICITY Mars Number of orbits: 500. A Mars Reconnaissance Orbiter (MRO) INITIAL ORBIT The first orbit described by the probe was an enormous ellipse. Duration: 35 hours. HIGH-GAIN PARABOLIC ANTENNA has a data transmission capacity 10 times greater than that of previous orbiters. The panels are almost closed. The main objective of this orbiting probe is to look for traces of water on the surface of Mars.

A Mars Reconnaissance Orbiter (MRO) INITIAL ORBIT The first orbit described by the probe was an enormous ellipse. Duration: 35 hours. HIGH-GAIN PARABOLIC ANTENNA has a data transmission capacity 10 times greater than that of previous orbiters. The panels are almost closed. The main objective of this orbiting probe is to look for traces of water on the surface of Mars. NASA launched the probe on Aug. 12, 2005; it reached Mars on March 10, 2006, after traveling 72 million miles (116 million km) in seven months.

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