Q&A with Michel Denis, ExoMars flight director

A Soyuz rocket lifted off from South America late Thursday to haul up the next two satellites for Europe’s Galileo navigation system, giving the network its ninth and 10th operational members. Launch occurred at 0208:10 GMT Friday (10:08:10 p.m. EDT Thursday).

A new European satellite carrying instruments to track changes in the world’s oceans, measure receding ice sheets and chart vegetation growth climbed into orbit Wednesday on top of a Russian Rockot launcher.

After an unusual stretch of excessive high-altitude winds prevented launch from French Guiana of 53 small satellites on a Vega rocket in June — and no sign of a letup in winds in the coming days — Arianespace said Wednesday that the mission will be delayed to Aug. 17 to allow time for teams to recharge launcher and payload batteries.