Brussels, 11/10/2012 (Agence Europe) - Galileo's third and fourth satellites are to be launched during the night of Friday to Saturday. Once more they will be launched from Europe's spaceport in Kourou, French Guyana, and placed in orbit onboard a Soyuz rocket operated by Arianespace. The resulting initial constellation of four satellites will allow the system to be validated and fine-tuned. Launches should then be speeded up in order to reach a final constellation of 22 satellites by the...