An interesting article about  two documentary style films about spaceflight made in the Soviet Union in the 1950s and 60s by director Pavel Klushantsev :  This is (maybe) how we’d have colonised the Moon if the Soviet Union had got there first – New Statesman.

The Moon. ЛУНА (1965)

From the caption:

Soviet Union:Leningrad Popular Science Film Studio, 1965
Director: Pavel Klushantsev
The film consists of two parts: popular scientific and science-fiction.
In the first part in the popular form the modern (1965) scientific convergence on the Moon are stated. In the second part the director and the artist create a picture of the future of the Moon.

Road to the Stars Дорога к звёздам (1956-57)

From the caption:

Soviet Union:Leningrad Popular Science Film Studio, 1956-1957
Director: Pavel Klushantsev
“Road to stars” – the first Soviet color popular science and scientific film about space exploration.
The film consists of two parts: popular-science and science-feature.
In the second part the director and the artist create a picture of the future of the cosmonautics.
The screenplay began to form in 1953. In 1956 began filming. In the summer of 1957 (in Crimea near Yalta) filming was completed.