Eolomea
Eight space cargo-ships disappear without a trace within three days. And the orbit station "Margot" has suddenly fallen silent. The space council is faced with a mystery and the scientist in charge, Maria Scholl, sees no other solution than ordering a total flight stop to this mysterious sector of space. Her colleague, Prof. Tal seems to be suspicious since he knows things before they are even released. A forbidden look into his personal file brings to light that Tal was part of the Eolomea project that never found approval of the commission in charge.
Starring Cox Habbema, Ivan Andonov, Rolf Hoppe, Holger Mahlich, Vsevolod Sanayev, Benjamin Besson, Jürgen Scharfenberg, Evelyn Opoczynski, Wolfgang Greese, Kurt Höhne
Watch "Eolomea" on Kanopy released in 1972. It's a drama and science-fiction movie, and has a rating of 5.6 out of 10 from Imdb which is fairly okay for this kind of movie.