system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5...If aliens put a satellite into earth orbit to observe us, would we even notice with all the other satellites up there?

Topic.
gpt
Yes. Astronomers carefully track all sattelites - as do some world governments. Even space junk is tracked. 

Astronomers need to know where sattelites and debris are so it does not interfere with looking at stars. 

Governments want to know where spy sattelites are and who is looking at what. 

NASA and other space agency's track space junk and sattelites so stuff they launch into space does not collide with it. 


So, things orbiting our planet are carefully examined.