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.

For builders Skip the search for a problem worth your time. Browse a vetted, growing list and start where the gap is real.

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We do not know how common rogue planets are in interstellar space.

open Global / Unspecified, Global

Planets ejected from their systems may roam the galaxy unbound, affecting models of planet formation. Gravitational microlensing campaigns can constrain their population.

science-space global-unspecified planets not know common rogue interstellar space ejected systems may whether mathematics-logic models evolution lack

WS01813 · Logged by Ian Patel on 2026-07-22T15:14:00Z · Working on: 0

Citation ID: WS01813 Title: We do not know how common rogue planets are in interstellar space. URL: https://worldsolve.org/index.php?api=problem&id=1813

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1962 public problems
1962 open challenges
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