Some observations:

A big letdown!

The movie is based on the premise that the Soviet Union landed a cosmonaut on the moon, but then kept it a secret. From there it just turns into a big science fiction story with a love "тройка" between two cosmonauts and a girl.

The Russians are all played by British actors and they come across rather stiff and unemotional. They do not "feel" Russian to me; they certainly do not remind me much of the young Soviet guys I worked with and hung out with for two years. On the other hand, at least they are not American actors attempting to speak Russian with horrible pronunciation.

A much better movie about the cosmonauts was "Первый в Космосе".

Meh.