Video: Soyuz MS-01 leaves the space station for landing

NASA and SpaceX officials are moving forward with preparations to launch the next commercial Crew Dragon mission to the International Space Station next week after a Flight Readiness Review Thursday, pending a final evaluation of a discovery by SpaceX that it has potentially been loading slightly more propellant than expected into its Falcon 9 rockets.

The Falcon 9 booster for SpaceX’s next mission fired up briefly on a Cape Canaveral launch pad Sunday in a routine pre-flight test before a scheduled launch Friday night to kick off the final flight of the first version of the company’s Dragon cargo capsule to the International Space Station.

The mission will be the 14th time that a SpaceX Dragon spacecraft carries humans to the International Space Station. The mission launched on Friday, March 14, at 7:03 p.m. EDT (2303 UTC).