Back to earth - the first Canadian astronaut to command the International Space Station and his American and Russian crewmates are given a traditional welcome in Kazakhstan.<br/> <br />The trio touched down earlier on Tuesday, with their Soyuz capsule raising clouds of dust as it ignited an engine to cushion its landing.<br/> <br />Canadian Chris Hadfield, NASA astronaut Tom Marshburn and Russian cosmonaut Roman Romanenko were covered with thermal blankets as they awaited medical tests after their landing.<br/> <br />The three had completed a five month mission aboard the 100 billion U.S. dollar International Space Station.<br/> <br />Hadfield also made history on Monday when he released the first music video shot in space - a zero gravity version of David Bowie's Space Oddity.<br/> <br />Speaking in Russian, he said the mission had been a big part of their lives and that it was 'part of humanity to be in space.'<br/> <br />It was the 35th expedition aboard the space station, a permanently staffed laboratory for sc
