The International Space Station’s first Canadian commander returned to Earth yesterday, after a 5 month tour on the space station. Sarnia native Chris Hadfield has become a social media superstar, with more than 1 million followers on Twitter, Facebook and other social media posting images of Earth, as well as videos and blogging about his everyday life in space. An accomplished musician, Hadfield recorded and distributed the first original music produced on the station, and even joined Ed Robertson of the alternative rock band Barenaked Ladies in the space-to-ground, live Canadian national network television premiere of a song the two wrote together: “I.S.S. (Is Somebody Singing).” Hadfield and two other astronauts blasted off on a Russian rocket on Dec. 19 and arrived at the outpost two days later, joining three others. Hadfield took command of the station when those three departed in mid-March.