system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What are Exoplanets and why are we looking for them?
gpt
Exoplanets are planets that are in orbit around stars other than our own sun.

Astronomers look for them because, well, that's part of what they do. Also finding exoplanets in the goldilocks zone raises a strong possibility of life on other planets.