Constellation

Hi everyone, i have a question that i can't resolve and, sorry for the ignorance about certain aspects of the game, but i found that even those who created and put the game online don't understand much about it, the question is - where are they found or do you buy or how do you get the stars you need to continue lighting the nodes of the constellation?-

The answer the game master gave me is, listen, listen, ask the other players and then i'm here to ask you help me if you can.

Thank you very much to anyone who can give me some valid suggestions.