Visitors examine exhibits at the exhibition "Open space" in the Central Museum of Communications named after Alexander Popov in Saint Petersburg, Russia, October 20, 2018.

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The Vostok spacecraft, left, and a portrait of Soviet cosmonaut Yuri Gagarin are displayed at the exhibition "Open space" in the Central Museum of Communications named after Alexander Popov in Saint Petersburg, Russia, October 20, 2018.

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The exposition hall is pictured during the exhibition "Open space" in the Central Museum of Communications named after Alexander Popov in Saint Petersburg, Russia, October 20, 2018.

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A visitor takes photos at the exhibition "Open space" in the Central Museum of Communications named after Alexander Popov in Saint Petersburg, Russia, October 20, 2018.

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Visitors attend the exhibition "Open space" in the Central Museum of Communications named after Alexander Popov in Saint Petersburg, Russia, October 20, 2018.

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A guide shows visitors the Vostok spacecraft at the exhibition "Open space" in the Central Museum of Communications named after Alexander Popov in Saint Petersburg, Russia, October 20, 2018.

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Visitors attend the exhibition "Open space" in the Central Museum of Communications named after Alexander Popov in Saint Petersburg, Russia, October 20, 2018.

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Visitors look at the portrait of Soviet cosmonaut Yuri Gagarin at the exhibition "Open space" in the Central Museum of Communications named after Alexander Popov in Saint Petersburg, Russia, October 20, 2018.

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