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trailer world Issue Two 2012

    Ausgabe Eins 2012  5 The photo Photo:ESA–P.Carril Europe‘s own sat-nav David and Sif have arrived in space: the two satellites are boosting the European satellite navigation system Galileo. Last October the European Space Agency (ESA) sent them into space with a launch rocket, releasing them into orbit at an altitude of around   22 kilometres. Now that four satellites are in position, this concludes the trial phase of the mega Galileo project. Rudimentary   position definition on earth should be possible from Spring 2013. If everything goes according to plan, by the end of 2014 there   will be 18 satellites in orbit, letting citizens use the first applications of Europe‘s own global satellite naviga- tion system. The final target is to have 30 satellites positioned in space. In future, they will interact with a network of ground stations to supply data for position definition with an accuracy of about four meters. 1 2

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