Trappist 1

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  • Article Recirculation Lead Image

    I Built a Stable Planetary System with 416 Planets in the Habitable Zone

    This system is completely stable—I double-checked with computer simulations. But nature would have a tough time forming this system. If it exists, it could only have been built by a super-advanced civilization.Image by Sean Raymond / planetplanet.net Nautilus Members enjoy an ad-free experience. Log in or Join now . When Frank Drake was a boy, […]