 and liftoff of Starliner and Atlas V. Their flight was supposed to last about a week, but problems with the Boeing spaceship have delayed their return. That's led to speculation that the astronauts are stuck aboard the space station. Joining me to discuss what's going on is NPR science correspondent Jeff Brumfield. Hi. Good morning, Leila. Good morning. So, Jeff, I guess the first question is, are these two astronauts actually stranded?