Chekhov Moscow Art Theatre's artistic director, actor Konstantin Khabensky, 2nd right, and Deputy head of the Gagarin Cosmonaut Training Center, Roscosmos cosmonaut Oleg Kononenko, right, attend an educational marathon as part of Space Week at the Valentina Tereshkova National Space Centre in Moscow, Russia. This year marks the 65th anniversary of the first human spaceflight, carried out by Yuri Gagarin aboard the Vostok 1.