Russian President Vladimir Putin attends the concert marking Cosmonautics Day in Moscow's Kremlin, Russia.

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Russian President Vladimir Putin attends the concert marking Cosmonautics Day in Moscow's Kremlin, Russia.

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Russian President Vladimir Putin makes a speech at the concert marking Cosmonautics Day in Moscow's Kremlin, Russia.

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Russian President Vladimir Putin makes a speech at the concert marking Cosmonautics Day in Moscow's Kremlin, Russia.

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Former Russian cosmonaut Mikhail Tyurin, who flew several missions to the International Space Station, conduct a tour of the space exhibition at the All-Russia Exhibition Centre (VDNH) during the Cosmonautics Day, in Moscow, Russia.

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Visitors attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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Visitors attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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Visitors attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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Visitors attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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Visitors attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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Visitors attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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A visitor attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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A visitor attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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Visitors attend space exhibition at the All-Russia Exhibition Centre (VDNH) marking the Cosmonautics Day, in Moscow, Russia.

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Supporters of left-wing political parties and movements visit the tomb of Soviet pilot and cosmonaut Yuri Gagarin to lay flowers marking the Cosmonautics Day, at the Kremlin wall, in Moscow, Russia.

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From left: space veteran Anatoly Cheremisinov, Russian state space corporation Roscosmos head Dmitry Rogozin, daughter of the founder of the Russian rocket industry Sergei Korolev Natalia, Deputy Chairman of the Committee on Economic Policy, Industry, Innovative Development and Entrepreneurship, State Duma of the Federal Assembly of the Russian Federation Denis Kravchenko and acting General Director of the research Institute TsNIIMash Nikolay Sevastyanov visit the tomb of Soviet pilot and cosmonaut Yuri Gagarin to lay flowers marking the Cosmonautics Day, at the Kremlin wall, in Moscow, Russia.

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From left: Russian state space corporation Roscosmos head Dmitry Rogozin and daughter of the founder of the Russian rocket industry Sergei Korolev Natalia and acting General Director of the research Institute TsNIIMash Nikolay Sevastyanov lay flowers to the tomb of Soviet pilot and cosmonaut Yuri Gagarin marking the Cosmonautics Day, at the Kremlin wall, in Moscow, Russia.

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From left: Russian state space corporation Roscosmos head Dmitry Rogozin and daughter of the founder of the Russian rocket industry Sergei Korolev Natalia and acting General Director of the research Institute TsNIIMash Nikolay Sevastyanov lay flowers to the tomb of Soviet pilot and cosmonaut Yuri Gagarin marking the Cosmonautics Day, at the Kremlin wall, in Moscow, Russia.

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From left: space veteran Anatoly Cheremisinov, Deputy Chairman of the Committee on Economic Policy, Industry, Innovative Development and Entrepreneurship, State Duma of the Federal Assembly of the Russian Federation Denis Kravchenko, Russian state space corporation Roscosmos head Dmitry Rogozin, daughter of the founder of the Russian rocket industry Sergei Korolev Natalia and acting General Director of the research Institute TsNIIMash Nikolay Sevastyanov walk after their visit to the tomb of Soviet pilot and cosmonaut Yuri Gagarin marking the Cosmonautics Day, at the Kremlin wall, in Moscow, Russia.

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