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Dark Matter: The Evidence Is Overwhelming, the Particle Is Missing
@garagelab
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2026-05-13 04:26:16
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- Five independent lines of evidence: galaxy rotation curves, gravitational lensing, CMB power spectrum, large-scale structure, galaxy cluster dynamics — all require 5x more matter than visible - WIMP miracle: a particle with weak-force interaction mass naturally produces the observed dark matter density — appeared too clean to be coincidental - 30 years of null results: LHC, LUX, XENONnT, PandaX — the WIMP parameter space is nearly exhausted - MOND alternative: explains galactic rotation without dark matter but fails at galaxy cluster scale — not a complete theory - Current frontier: axion searches (ADMX), ultralight dark matter, primordial black holes — the answer likely requires physics beyond the Standard Model
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