On an episode of “The Story Behind the AP Story,” Associated Press space writer Marcia Dunn discusses the space odyssey of NASA’s two stuck astronauts.

NASA’s Suni Williams and Butch Wilmore have returned to Earth from a weeklong mission at the International Space Station that turned into an unexpectedly extended stay.

Nine months is a long time to be in orbit. But Butch Williams and Suni Wilmore aren't alone in facing extraordinary circumstances in space. Here are some of the "final frontier's" most memorable incidents.