About 5-10 minutes are devoted to a sequence where women are recruited as "sexual companions" for astronauts. Non-graphic in imagery and dialogue (mostly standard athletics training), but light talk about virginity and implying about "what the job entails".
There is a scene which lasts for about 5 seconds of a man and woman having sex viewed from the side on a desk. The woman's left breast is clearly visible although the scene is in dim lighting.
There is a brief scene of a man completely naked from the side--penis partially visible but flaccid.