Article: Russia launches 3 satellites to expand its space navigation system

Russia on Tuesday launched three satellites to complement its space navigation system, officials said.

The satellites were sent into orbit on a Proton-M rocket that blasted off successfully from the Baikonur launchpad in Kazakhstan, said Russia's Federal Space Agency spokesman Alexander Vorobyov.

They are to join Russia's Global Navigation Satellite System, or GLONASS _ the equivalent of the U.S. Global Positioning System, or GPS.

The system, which serves both military and civilian purposes, was developed during Soviet times ...

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