I vaguely remember seeing on TV in the nineties an episode or movie from which I remember the following key points:
- A village on an earth-like planet inhabited by humans is depicted, and those humans live their whole life over a course of a hundred days (or something on that order), aging rapidly each day
- the villagers are under the influence of some "probe" that not only causes their lives to be compressed into a hundred days but also makes them fall asleep every night at a prescribed time
- the visitors to this planet (also humans) take one or more of these villagers out of said village, out of the influence zone of the "probe", which they notice by the fact that they don't fall asleep at the prescribed time at night anymore (the first effect they notice, besides not aging rapidly anymore).
I believe it is later revealed that this has been set up as an unethical scientific experiment wherein the outside observer wanted to study the rise and fall of human civilizations by shortening the time it takes for a generations of humans to live.