Q&A with Elon Musk, SpaceX’s founder and CEO

NASA managers have ruled out putting a crew on board an Orion capsule atop the agency’s huge Space Launch System rocket for the gargantuan booster’s maiden flight in 2019, citing technical risks and higher costs, up to as much as $900 million, agency officials said Friday.

SpaceX successfully launched an oft-delayed Falcon 9 rocket mission at 6:35 p.m. EST (2335 GMT) Friday after more than a week of delays caused by issues with super-chilled liquid oxygen propellant, a boat the strayed into restricted waters offshore Cape Canaveral, and extreme upper level winds. The experimental recovery of the first stage on an ocean-going barge was not a success.

SpaceX launched 60 more spacecraft Wednesday to join the Starlink fleet beaming broadband signals around the world, while the company’s engineers move closer to debuting a sunshade that could reduce the satellites’ impacts on ground-based astronomy.