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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Characterizing the small-scale structure of dark matter halos remains difficult.

open Global / Unspecified, Global

Simulations predict substructure that observations only partly confirm. Strong lensing and stellar stream measurements can probe these scales.

science-space global-unspecified characterizing small-scale structure dark matter halos remains difficult simulations predict lack remain interstellar know cosmic precise

WS01835 · Logged by Ian Patel on 2026-07-22T15:14:00Z · Working on: 0

Citation ID: WS01835 Title: Characterizing the small-scale structure of dark matter halos remains difficult. URL: https://worldsolve.org/index.php?api=problem&id=1835

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1962 public problems
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