Live coverage: Delta 4-Heavy launch scrubbed again

SpaceX conducted a final Launch Readiness Review on Monday ahead of the scheduled liftoff Wednesday of NASA astronauts Doug Hurley and Bob Behnken on a test flight of the Crew Dragon spacecraft to the International Space Station. Launch remains set for 4:33:33 p.m. EDT (2033:33 GMT) Wednesday, weather permitting.

The first flight of a new rail-guided satellite launch system from a military missile range in Hawaii has been delayed until late October due to problems with the rocket’s first stage motor, according to a U.S. Air Force official.

The United Launch Alliance Delta 4-Heavy rocket, standing 235 feet tall and weighing 1.6 million pounds fully fueled, unleashes 2.1 million pounds of thrust from the three RS-68A main engines at 1:51 p.m. EDT (1751 GMT) today to launch from Cape Canaveral on NROL-37.