After two delays, plans now call for a Wednesday launch from the Central Coast of a rocket carrying a payload of satellites.
SpaceX is hoping to launch the Falcon 9 rocket from Vandenberg Air Force Base during a launch window which begins at 6:17 a.m. Wednesday.
The launch was originally set for last Saturday, and then bumped to Sunday. SpaceX officials say there were no problems with the rocket or its payload, but engineers wanted to do some additional checks before liftoff.
The payload includes a main payload of a Spanish radar imaging satellite, as well as some smaller satellites.