I finally had time to read this novella and it is fantastic, 4/5 Stars. Aside: My friend, who is a professional astrophysicist, told me the earth is at the inside border of our sun's "Goldilocks Zone," and the iron core, 24-hour day spin, van Allen belts, that deflect the cosmic rays, solar wind, etc. are needed for us to exist. I think I had known that before, but it is a great reminder of why we have low coefficients in the Drake equation, partial explanations of the Fermi Paradox, etc.
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