Agency Mars500 salutes Yuri Gagarin 12/04/2011 386 views 0 likes ESA / About Us / ESA history / 50 years of humans in space Mars500 crewmembers Diego Urbina, Romain Charles and Wang Yue recall what Yuri Gagarin's historic flight is meaning for them on this video message. Like Thank you for liking You have already liked this page, you can only like it once!