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Q&A How bright is the night with 18-22 AU distant star?

In my previous question, I asked about how close can two stars in a binary system be for planets around them to stay earthlike, assuming that both stars have very sunlike and both planets very eart...

1 answer  ·  posted 5y ago by Failus Maximus‭  ·  last activity 5y ago by Failus Maximus‭