OK, obvious spoilers here. I JUST watched this in a theater in Italian with live recently translated subtitles. The plot goes as follows. Alice wakes up thinking it's Tuesday but in reality it is Thursday. She tries to hand in a report for work that was due on Tuesday. She is told it is Thursday and she has been overlooked for an important job due to this problem. They allude to the fact that she has had problems before, so it is hinted at that she has some responsibility issues, or maybe some mental issues. While meeting with her friend she goes over what she remembers, and she gets as far as remembering the lecture she was translating, and it was a scientific lecture on astronautics. She gets very flustered and dizzy and leaves the building and walks off, and that is all she remembers. She does mention how when she awoke she was having a dream about a movie she once saw when young, and it disturbed her greatly, so much so that she walked out and never saw the ending. The friend mentions her always taking sleeping pills and having sleeping issues, so the foundation for her mental issues is set up from the beginning.
It seems like the lecture set off a chain of events that caused her to have a mental breakdown, and travel back to a vacation spot she once visited as a child. She incorporated the movie she saw from her childhood with her real life, I am guessing these events may have happened around the same time. She also met a guy, she was young and it seems like she may have lost her virginity to him, or at the very least was intimate with him. This left an impression on her all these years, and she must have had a rough romantic life and she probably romanticized her first encounter. Adding this movie that traumatized her into her real life memories, she creates a mental scenario where she has to find this older lover and she is being sought after for mental experiments.
She slowly starts to unravel the mystery and finds that she was at this vacation spot earlier in the week, and eventually she finds some papers that she was translating that she burned at the vacation spot, one specific one mentioning astronautics. This piece of the puzzle is basically saying that the lecture she was listening to reminded her of this traumatic movie, and her early romance, which set off a chain or events where she thought she was being pursued by the Klaus Kinski character BLACKMAN in an old sci fi movie.
As the movie unravels we find out that the guy who gave her a ride is the same guy she met with when she was young. He recognized her but she was using a fake name, and he called a doctor to ask him to help. She cut him with a pair of scissors and left, going back to her normal life. When she gets back he uses this opportunity to try and reconnect with her and get her some mental help. They finally hook up and he tells the doctor that she seems better, but when she overhears him talking to the doctor she goes right back to her delusional thoughts of feeling pursued and kills him. The astronauts chasing her at the end are in her head, she most likely runs around until she passes out and then is found and locked up, especially after they discover the guys dead body.
In the end of the print I saw there is a title card letting you know she was locked up and is still in a mental hospital to this day. As far as I am concerned the whole Klaus Kinski chasing her thing was in her mind, as were the astronauts at the end of the movie. Obviously the viewer can choose to believe otherwise, but this is what I think.
I think the moon is a metaphor for loneliness, as if there could be anything worse than being abandoned in outer space, watching the module take off, KNOWING they did it on purpose. SHE was the astronaut. I felt my heart wrench in the opening sequence.
Harry was Harry, as his dog-tag was imprinted, and I think Kinski was Alice's manifestation of Harry as the bad guy, the one who left her alone on the moon.
It could be more enigmatic than that. Was the film real and did it drive her crazy, or was she just crazy and invented the film to keep her last shred of sanity? But I think in the end it's a sad story about a broken person.