Video: Saturday’s SpaceX launch

Keeping with its mantra of fly, fix and fly again, SpaceX says it has resolved a valve problem that kept one of its Falcon 9 boosters from successfully touching down on a barge in the Atlantic Ocean in April, ahead of another landing attempt after a launch from Cape Canaveral set for Sunday.

The dual mission satellite will help better monitor both weather patterns as well as air quality over Europe and North Africa. SpaceX launched its Falcon 9 rocket on Tuesday, July 1, at 5:04 p.m. EDT (2104 UTC).

SpaceX has concluded fatigue on an engine cover caused one of the nine Merlin 1D first stage engines on the company’s most recent launch to shut down early during ascent, leading to the loss of the booster during an offshore landing attempt in the Atlantic Ocean, an official said Monday.