Confident in technical and procedural fixes implemented since a launch in August left two Galileo satellites in the wrong orbit, officials with Europe’s navigation program say Friday’s liftoff of two identical craft on a Soyuz rocket will try to fill the same slots in the fleet as targeted by last year’s failed mission.

Two-and-a-half days after launch from Virginia, a Northrop Grumman Cygnus supply ship arrived at the International Space Station Tuesday with nearly 7,500 pounds of cargo. Capture with the station’s robotic arm occurred at 4:05 a.m. EST (0905 GMT).

A United Launch Atlas 5 rocket is set to launch the U.S. Air Force’s fifth Advanced Extremely High Frequency communications satellite from Cape Canaveral. This timeline shows the major mission events planned over a nearly six-hour flight to an optimized geostationary transfer orbit.