Ground controllers commanded the International Space Station's Progress 21 thrusters to reboost the facility's orbit last Friday, placing it at the proper altitude for the upcoming rendezvous and docking of the Russian Progress 22 cargo ship, which will launch June 24 and dock June 26.
The reboost also prepared the station for rendezvous with and docking by NASA's shuttle Discovery on the STS-121 mission, now expected to go on schedule in July.
On Sunday, commander Pavel Vinogradov brought the station's Elektron oxygen-generation system back on line by conducting a troubleshooting procedure.
He completed the repair by re-attaching a grounding wire that apparently was the cause for its failure last week after being reactivated and running briefly.
No power swapout was required, and Elektron is operating normally once again, NASA said in a news release.
