What does the "system" in this context mean? I don't think it has anything to do with tech terms like a computer system.

Native speaker’s answer
Rebecca
Well, "system" in general means the way something works as part of an interconnecting network or organization. So a "computer system" is the way a computer works with all its parts, coding, and so on. And, here, a "solar system" is how the planets all work together and operate within the same "network." Ex: A solar system is a group of planets that revolve around the sun. Ex: The system on the computer needs updating to function properly.