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Юрий Кольцов as Константин Эдуардович Циолковский |
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Нина Меньшикова as Люба Циолковская |
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Vera Dikhtyar as Варвара Евграфовна |
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Юрий Кротенко as Игнат Циолковский |
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Владимир Балашов as Дорофеев |
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Георгий Бударов as Павел Филимонович Балабанов |
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Зиновий Гердт as |
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Александр Лаврухин as |
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Юрий Любимов as Петр Петрович Бабурин |
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Юрий Медведев as Чупров |
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Valeria Menikovskaya as |
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Лев Потёмкин as персонаж из Жюль Верна |
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Владимир Трошин as Мерцалов |
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Никита Кондратьев as |
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Сергей Цейц as |
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Лидия Королёва as служанка у Мерцаловых |
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Вера Бурлакова as |
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Яков Ленц as служащий Мерцалова |
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Бруно Ляуш as купец |
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Владимир Марута as Deacon (uncredited) |
| Directing | Борис Бунеев | Director |
| Writing | Валентин Ежов | Writer |
| Writing | Василий Соловьёв | Writer |
| Sound | Михаил Раухвергер | Original Music Composer |
| Camera | Margarita Pilikhina | Director of Photography |
| Art | Борис Дуленков | Production Design |
| Sound | Дмитрий Белевич | Sound Director |
| Camera | Михаил Якович | Camera Operator |
| Directing | Виктор Лосев | First Assistant Director |
| Directing | K. Nikolayevich | First Assistant Director |
| Editing | Yevgeniya Abdirkina | Editor |
| Writing | Наталья Торчинская | Script Editor |
| Visual Effects | Арсений Клопотовский | VFX Supervisor |
| Visual Effects | Владимир Никитченко | VFX Supervisor |
| Visual Effects | Леонид Акимов | VFX Director of Photography |
| Visual Effects | Л. Сазонов | VFX Director of Photography |
| Costume & Make-Up | Ольга Беднова | Costume Design |
| Costume & Make-Up | A. Tolkunova | Makeup & Hair |
| Art | Борис Кузовкин | Assistant Production Design |
| Camera | I. Dikarev | Assistant Camera |
| Directing | A. Gudkova | Second Assistant Director |
| Directing | А. Кузьмин | Second Assistant Director |
| Visual Effects | Vladimir Likhachyov | Pyrotechnic Supervisor |
| Writing | Борис Ляпунов | Script Consultant |
| Writing | Yuriy Pobedonostsev | Script Consultant |
| Writing | Владимир Акимов | Script Consultant |
| Writing | B. Monastyrev | Script Consultant |
| Sound | Григорий Гамбург | Conductor |
| Camera | Михаил Гойхберг | Assistant Camera |
| Production | Григорий Купершмидт | Executive Producer |
