A forecast of low ceilings, thick clouds and rainy weather Thursday has led NASA and Northrop Grumman officials to push back the launch of an Antares rocket and a space station-bound supply ship from Virginia’s Eastern Shore to Friday morning.

A Russian Soyuz booster and an automated Progress resupply ship reached their launch pad Friday at the Baikonur Cosmodrome in Kazakhstan, two days before firing into orbit test out a new expedited rendezvous sequence that will culminate in the Progress spacecraft’s docking with the International Space Station just three-and-a-half hours after launch.

A Proton booster rocketed away from the Baikonur Cosmodrome in Kazaskhtan Wednesday with a Eutelsat television broadcasting craft and the satellite industry’s first commercial in-space servicing vehicle. The successful launch marked the first commercial Proton mission under the auspices of International Launch Services in more than two years.