Originally posted by -Dulce-
The Apollo 13 mission took a total of 6 days, during which the craft was exposed to uninterupted sunlight. Therefore, I have difficulty believing
that the crew was ever cold.

Well like you said, they didn't have any power on. The electronics heat up the insides of the space craft very easily. I spend my days inside 737's
and when the power is turned on, those things get very warm inside. The Sun doesn't do much for heating up the inside of the space craft, due to the
very reflective outter surface which reflects a large amount of the Suns energy.
I'm sure if the ISS lost all power, it would become rather cold inside as well.
[edit on 23-8-2007 by jra]