11.   All the former astronauts have a pater nal concern for the space agency.

12.   But Brown proved that astronauts have a sense of humor by stealing the show from Leno.

13.   But on Mars, astronauts would have to live with dust and breathe it for weeks or months.

14.   But Russian officials insisted that the space station craft was durable and safe and added that the astronauts had sufficient food and water.

15.   Exhausted, panicked, the veteran astronaut has to ask the engineers at Houston to double-check his math.

16.   For now, astronauts will have to settle for blue accents on the handholds and drawer pulls in the lab, and burgundy accents in the hab.

17.   In the worst case, the astronauts would have to abandon the powerless orbital base.

18.   It tumbled out of control then because of crew errors, and two space-walking astronauts had to go out and haul it in.

19.   Like royalty, the astronauts have dressers.

20.   Once in space, the astronauts have few chances to get the deployment right.