On Wednesday morning, the Falcon 9 rocket stands ready on the launch pad. [credit:
Trevor Mahlmann for Ars ]
12:20pm ET Wednesday Update: SpaceX says it has canceled Wednesday’s launch attempt due to high winds over the launch site, as well as rough seas in the vicinity of its drone ship, which may have precluded a safe first stage landing.
Fortunately the company has a back-up launch attempt on Thursday, set for 12:29pm ET (17:29 UTC). Weather conditions are expected to be more favorable at that time.
Original post: A twice-flown Dragon spacecraft is ready to be launched on Wednesday to the International Space Station