The satellite industry will hold its breath on Saturday as Europe tries for the second time to fly its super-rocket - the "10-tonne" Ariane 5-ECA.The 50m-high (160ft) vehicle exploded four minutes into its first mission in 2002, destroying a telecoms payload valued at 600 million euros (£410m). Rocket operator Arianespace believes it has fixed the cause of the failure and is betting its future on the ECA. The vehicle is set to become Europe's primary launcher in the decade ahead. Lift-off from the Kourou spaceport in French Guiana is timed for a launch window that runs from 1949 to...