Lyusyena Ovchinnikova The Big Space Travel (Russian: Большое космическое путешествие, romanized: Bolshoe kosmicheskoye puteshestvie) is a Soviet 1975 children's science fiction film directed by Valentin Selivanov based on Sergey Mikhalkov's play The First Three, or the Year of 2001 ...

A series of short-term emergencies that arise shortly after this force the child astronauts to make independent decisions in conditions when erroneous actions threaten to destroy the crew and the ship.

With the honor of withstanding all the tests, the film's characters suddenly discover that the Astra is an underground simulator, and the expedition of the "first three", which has never really left Earth, is a psychological experiment designed to find out the prospects of a real children's space flight.

At the same time it turns out that Fedya, who accidentally learned about the real mission of the Astra shortly before the start, hid it from Sveta and Sasha, with the objective of preventing failure of the important experiment.

[2] The film's soundtrack by beginning composer Alexey Rybnikov proved to be quite popular — it received significant airplay in the Soviet Union.