SpaceX again scraps second attempt to test pioneering Falcon 9 reusable rocket

Entrepreneur Elon Musk's company calls off launch of DSCOVR satellite with just 12 minutes remaining in countdown due to safety concerns over wind shear

SpaceX has called off its planned launch of a deep-space observatory that would have been its latest attempt to land a reusable rocket booster on a barge in the Atlantic Ocean.

With just 12 minutes remaining in the countdown at Cape Canaveral in Florida on Tuesday night, wind gusts of 115mph caused a safety concern, officials said. It was SpaceX's second attempt this week to launch the Deep Space Climate Observatory (DSCOVR) after an earlier attempt on Sunday was cancelled due to weather. The launch must go forward by Wednesday, or face delays until next week.

Extreme wind shear over Cape Canaveral. Feels like a sledgehammer when supersonic in the vertical. Hoping it changes "

Related: SpaceX Falcon 9: private space company's floating barge mission fails