Soyuz rocket launched Friday after delay
October 21, 2011 -- Updated 1603 GMT (0003 HKT)
The rocket launched just after 6:30 a.m. ET.
The Russian-built Soyuz is hauling the first two satellites of a planned rival to the United States' Global Positioning System -- a major milestone for the European space industry.
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The satellites weigh about 700 kilograms (1,543 pounds) each and form the operational nucleus of Europe's 30-satellite Galileo navigation constellation, launch operator Arianespace said.
"Satellite positioning has already become the standard way of navigating," the European Space Agency said. " If the signals were switched off tomorrow, many ship and aircraft crews would find it inconvenient and difficult to revert to traditional navigation methods."
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European users currently rely on the GPS or Russian Glonass satellites, the agency said.
Scientists delayed the launch a few hours before liftoff Thursday after they detected a problem during fueling at the base in French Guiana, according to the agency.
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Soyuz's flight is the first to depart from European territory in Kourou, French Guiana.
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"October's launch will be doubly historic: the first Soyuz from a spaceport outside of Baikonur in Kazakhstan or Plesetsk in Russia and the start of building Europe's Galileo satnav constellation," the agency said in a statement released before the launch.
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The Galileo navigation constellation is a collaborative effort between the European Space Agency and the European Union. The space agency said it plans to launch four operational satellites in 2011 and 2012.
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