From fixing a pair of glasses to performing the most basic of human functions, life can be challenging on the International Space Station.
But those on board adjust quickly, according to Chris Cassidy, 44, who served in Afghanistan as a navy Seal before joining Nasa. He has made an almost seamless transition from working on submarines to becoming part of an international space team.
Having made a sedate three-day journey to the space station on a shuttle, the six-hour trip on the Russian Soyuz was somewhat different.
“The Soyuz is much, much smaller. Three of us, two Russians and myself and you are really kind of strapped in, it is very small.
“Imagine three big suited up folks inside of a little Smart Car or a Mini Cooper – just enough room for the three of you, a couple of bags and a bit of stuff.