Russia’s space agency has decided to cut the size of its crew complement on the International Space Station beginning in March 2017 to reduce operating costs until a new Russian science lab is activated on the complex in early 2018, officials confirmed this week.

SpaceX ran a Falcon 9 rocket through a customary preflight checkout Tuesday, filling it with super-cold propellants and firing its nine Merlin first stage engines in preparation for liftoff Friday on a resupply run to the International Space Station.

The Soyuz booster that will send the International Space Station’s next three residents into orbit later this week rolled out of an integration hangar early Monday and rode a railroad car to its launch pad at the Baikonur Cosmodrome in Kazakhstan.