BUDAPEST, June 4, 2016 (Xinhua) -- Former Canadian astronaut Chris Hadfield sings his version of David Bowie's "Space Oddity" during an event called "Brain Bar Budapest" in Budapest, capital of Hungary, on June 3, 2016. He recorded his version of David Bowie's song "Space Oddity" in space. (Xinhua/Attila Volgyi)