Members only: Press site view of SpaceX’s 13th space station resupply launch

Vaulting away from Cape Canaveral on an unusual southerly trajectory, a Falcon 9 rocket dodged stormy weather and successfully placed an Argentine radar observation satellite into an orbit over Earth’s poles Sunday on SpaceX’s 100th launch.

The addition of a U.S. Air Force communications satellite has capped the assembly of a 218-foot-tall United Launch Alliance Delta 4 rocket at Cape Canaveral set for liftoff the evening of March 13.

SpaceX is more than a week into a company-led probe of a launch pad explosion Sept. 1 that destroyed a Falcon 9 booster and an Israeli communications satellite, but the investigation so far has turned up no smoking gun on the cause of the mishap, Elon Musk said Friday.