Live coverage: Orion lands in Pacific

A Russian Proton rocket lifted off at 1017 GMT (6:17 a.m. EDT) Wednesday from the Baikonur Cosmodorme in Kazakhstan. After a marathon 16-hour-long launch sequence, the Proton and its Breeze M upper stage will deploy the Eutelsat 5 West B video broadcast satellite and a robotic satellite servicing payload aiming to attempt the first-ever docking in geosynchronous orbit.

SpaceX test-fired a previously-flown Falcon 9 rocket Monday evening on pad 39A at NASA’s Kennedy Space Center in Florida, setting the stage for a launch later this week carrying the Japanese-built, Qatari-owned Es’hail 2 communications satellite to orbit.

Northrop Grumman’s launch team aborted an Antares rocket launch from Virginia’s Eastern Shore minutes before liftoff Sunday evening. The rocket is set to loft a Cygnus cargo freighter toward the International Space Station with nearly four tons of supplies and experiments.