system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do satellites work if they are just pointed in one direction and the earth is constantly rotating?
gpt
Satellites aren't stationary.  They're orbiting the planet at many thousands of miles an hour.  Gravity is trying to pull them straight back to earth, but since they have so much speed horizontally, they end up making a curved path.

There is a special altitude at around 22 thousand miles up that the speed across the surface of the planet matches the speed the planet is going.  Which results in the satellite just hanging still in the same location above the planet.  We call this geostationary orbit.