Cosmonaut Boris Volynov near Yury Gagarin's Volga M-21 service car during the celebrations held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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The UTI MiG-15 aircraft used by Yury Gagarin for training and the cosmonaut's Volga M-21 service car during the celebrations held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Cosmonauts Valentina Tereshkova and Boris Volynov during the celebration held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Cosmonaut Alexei Leonov near Yury Gagarin's Volga M-21 service car during the celebrations held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Cosmonauts Alexei Leonov, fourth right, Boris Volynov, sixth right, and Valentina Tereshkova during a flower laying ceremony at the Yury Gagarin Monument at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Cosmonaut Alexei Leonov during the celebration held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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From left: cosmonauts Alexei Leonov, Valentina Tereshkova and Boris Volynov during the celebration held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Cosmonaut Valentina Tereshkova with a commemorative dirk during the celebration held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Cosmonaut Alexei Leonov with a commemorative dirk during the celebration held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Cosmonaut Alexei Leonov speaks during the unveiling of the UTI MiG-15 aircraft used by Yury Gagarin for training during the celebrations held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Cosmonauts Boris Volynov, second left, Alexei Leonov, third left, and Valentina Tereshkova during the unveiling of the UTI MiG-15 aircraft used by Yury Gagarin for training during the celebrations held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

12.04.2015#2604565

Cosmonaut Valentina Tereshkova during the unveiling of the UTI MiG-15 aircraft used by Yury Gagarin for training during the celebrations held at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

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Getting ready for the unveiling ceremony of the UTI MiG-15 aircraft used by Yury Gagarin for training, at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

09.04.2015#2604557

Getting ready for the unveiling ceremony of the UTI MiG-15 aircraft used by Yury Gagarin for training, at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

09.04.2015#2604556

Getting ready for the unveiling ceremony of the UTI MiG-15 aircraft used by Yury Gagarin for training, at the Yury Gagarin Research and Test Cosmonaut Training Center on Cosmonautics Day.

09.04.2015#2604553