World Solve — A living repository of problems worth solving.

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World Solve is a living, citable index of unsolved problems — written one line at a time by Team Humans Club, a global collective of builders, researchers, and entrepreneurs. We do not solve the problems here. We Democratize Innovation.

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We do not know how common truly Earth-like habitable planets are.

open United States, North America

Kepler and other missions have identified thousands of exoplanets, but we lack robust statistics on Earth-size worlds with stable climates and liquid water. Next-generation transit and direct-imaging missions must refine occurrence rates.

climate-environment north-america united-states not know common truly earth-like habitable planets missions kepler global-unspecified philosophy-ethics whether science-space earth mathematics-logic

WS01806 · Logged by Ian Patel on 2026-07-22T15:14:00Z · Working on: 0

Citation ID: WS01806 Title: We do not know how common truly Earth-like habitable planets are. URL: https://worldsolve.org/index.php?api=problem&id=1806

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