41.   For the first years of the space station, astronauts will have to rely on a three-man Soyuz capsule for emergency escapes.

42.   In case Zarya and Unity could not be connected with the robot arm, two spacewalking astronauts would have to manually fit them together.

43.   No U.S. space mission has ever been cut short for medical reasons, although ill and even potentially ill astronauts have delayed launches and been bumped before flight.

44.   Taddeo said the astronauts will have to relearn such simple habits as putting objects on tables, instead of just releasing them and expecting them to float.

45.   Space shuttle Atlantis astronauts had a few remaining chores as they wrapped up their time on the international space station Thursday and prepared for a weekend return to Earth.

46.   Space shuttle Atlantis astronauts had a few remaining chores as they wrapped up their work on the international space station and prepared for a weekend return to Earth.

47.   The astronauts had a light schedule today, including seven hours of free time.

48.   The astronauts also had to remove hundreds of bolts and panels that were used to reinforce the components for launch.

49.   The astronauts had to shut the telescope doors for an hour Thursday afternoon because of a small jet leak.

50.   The astronauts have had to use a slower shuttle antenna to relay staggered snapshots and occasional snippets of video.