MSNBC (Oberg): Surviving the isolation of space:

MSNBC (Oberg): Surviving the isolation of space:
2-man mission poses unique psychological challenges
http://www.msnbc.com/news/956091.asp?0cv=TA01

By James Oberg, NBC NEWS SPACE ANALYST

HOUSTON, Aug. 24 — There may be no “up” or “down” in the zero gravity of
space, but when you pass the halfway point of a six-month space expedition,
it sure ought to FEEL like downhill. And while the space station has been
circling Earth sixteen times a day, the arduous psychological journey of its
crew has passed a significant milestone. That was worth a party.
says their NASA mission controller.