The service is taking the Rocket Systems Launch Program back to its customer-funded roots, but small launchers still have routes to work with the government.
Readers write about the Mars Sample Return, innovation at Skunk Works, leadership at Boeing, visionary technology in fiction and the passing of Joe Engle.
Listen in as editors explain why a crew vehicle is coming home from the space station without a crew, and what it means for Boeing, SpaceX and two stranded astronauts.
