Fascinating stuff! It must be so incredible to be able to look down on the earth from so far away, although I'm sure those living conditions must take some getting used to (especially the toilet!). Must be quite a shock to the system when you come back to earth after 6 months in a weightless environment.
I've just finished reading a really good book if anyone is interested - it's one astronaut's experience of space shuttle missions during the 1980s:
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