Live coverage: Ariane 5 blasts off with two Intelsat satellites

Ground crews in French Guiana on Monday transferred an Ariane 5 rocket to its launch pad, moving the vehicle into position for liftoff Wednesday with four European Galileo navigation satellites on the Ariane 5’s last flight with an older-generation, out-of-production upper stage.

SpaceX called off a try Sunday to launch a package of Orbcomm communications satellites from Cape Canaveral, eyeing a better chance to land the Falcon 9 rocket’s first stage booster Monday, according to Elon Musk, the company’s billionaire founder.

Follow the key events of the Falcon 9 rocket’s ascent to orbit with the another set of 10 next-generation satellites for Iridium’s voice and data relay fleet.