After the threat of lightning kept the mission on the ground Thursday, Arianespace and the European Space Agency successfully launched an Ariane 5 rocket Friday from Kourou, French Guiana, with the Jupiter Icy Moons Explorer mission, a robotic spacecraft embarking on an eight-year journey to the solar system’s largest planet. Liftoff with ESA’s JUICE spacecraft occurred at 8:14 a.m. EDT (1214 UTC).

Advancing the future of weather forecasting in the U.S., a United Launch Alliance Atlas 5 rocket lifted off from Cape Canaveral at 6:42 p.m. EST (2342 GMT) today to deploy the GOES-R satellite, anext-generation geostationary observatory that promises unprecedented clarity and speed in tracking storms. Follow the ascent in our live journal.

A Russian-built Soyuz rocket lifted off from South America at 0848 GMT (4:48 a.m. EDT) Tuesday with two new navigation satellites for Europe’s Galileo system, readying the network for initial operating capability later this year.