A European Ariane 5 rocket blasts off from Kourou, French Guiana, on Tuesday with Europe’s MTG-I1 weather satellite and Intelsat’s Galaxy 35 and 36 communications satellites. Credit: ESA–M. Pedoussaut
A European Ariane 5 rocket fired off a launching stand Tuesday in tropical South America with the vanguard of a modernized series of weather satellites to improve storm forecasts for Europe, Africa, and the Middle East, and two Intelsat television broadcasting satellites to cover the United States, a heavyweight payload totaling more than 24,000 pounds (about 11 metric tons).

