Yuri Gagarin

Russia's President Vladimir Putin (L) listens to explanations and looks at an exhibit as he visits the Cosmonautics Memorial Museum in Moscow, Russia, 11 April 2014.

Sergei Karpukhin/EPA

Russia’s President Vladimir Putin visits the Memorial Museum of Cosmonautics in Moscow. On Saturday, Russia celebrates Cosmonautics day which marks Yuri Gagarin’s pioneering flight into space.