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Q&A Are planetary orbits absolutely necessary?

One of my more brilliant characters is taking a terraforming class and at one point, early in the story, she has to leave the action to take an exam. The question presented in that scene is listed...

15 answers  ·  posted 8y ago by Henry Taylor‭  ·  last activity 8y ago by Henry Taylor‭

Question astronomy reality-check megastructures gas