Boeing vs. SpaceX: Which will bring NASA’s stranded astronauts back to Earth?

Plans on how to bring home two American astronauts stranded at the International Space Station are still up in the air, but NASA says it might call on SpaceX to shuttle them back to Earth – a move that would be another blow to embattled aerospace giant Boeing.

Butch Wilmore and Suni Williams were flown to space on Boeing’s Starliner on June 5, but remain stuck on the ISS now two months past their planned return after the spacecraft they arrived on was discovered to have helium leaks and propulsion syst