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 and the Egyptian satellite operator Nilesat have signed a contract to launch the Nilesat 301 communications craft on a Falcon 9 rocket in 2022, SpaceX confirmed this week.

Tyvak, a manufacturer of small satellites, disclosed new details Monday about an experimental spacecraft launched aboard a SpaceX Falcon 9 rocket Saturday, revealing plans to validate compact optical telescopes that could offer a new way to monitor space traffic and orbital debris.