In June, two NASA astronauts flew to the International Space Station on a Boeing spacecraft for a week-long test mission. But problems with the machinery mean they’ll be stuck there for 8 months… and when they come back in February, they won’t be flying Boeing. Instead, they’re hitching a ride with the company’s biggest rival in commercial space travel: Elon Musk’s SpaceX.

Today on the show: space reporter Loren Grush and Boeing reporter Julie Johnsson on the challenges facing Boeing’s space program, the rise of SpaceX, and the future of NASA’s ambitions beyond our planet.

Further listening: Boeing Faces Washington and Wall Street Reckonings