Live coverage: Atlas 5 countdown and launch journal

A European Vega rocket lifted off Tuesday from the Guiana Space Center on the northern shoreline of South America with a high-resolution reconnaissance satellite for the Moroccan government. Launch occurred at 8:42:31 p.m. EST Tuesday (0142:31 GMT Wednesday) from Kourou, French Guiana.

In a fiery, dramatic comeback for SpaceX, a Falcon 9 rocket took off from Cape Canaveral, streaking into orbit as its booster stage returned to a historic landing on Florida’s Space Coast in a key achievement aimed at slashing the cost of space transportation. Eleven communications satellites for Orbcomm were deployed in orbit in the flight’s prime objective.

United Launch Alliance, the incumbent leader in U.S. rocketry, goes for its 100th flight Friday, a milestone nine years in the making after eclectic missions to Mars, the moon and Jupiter, and deployments of commercial, military and reconnaissance spacecraft.