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Q&A A Stable Red Giant Trinary System

In an alternate universe, we have a spot in the Orion Arm where we have nine Earth-like planets orbiting three red giants. Judging from the size and luminosity of each star, it's been conferred ...

1 answer  ·  posted 5y ago by JohnWDailey‭  ·  last activity 5y ago by JohnWDailey‭

Question stars orbital-mechanics