File:Galactic rotation curve (expected vs observed).png

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Original file (960 × 576 pixels, file size: 26 KB, MIME type: image/png)

Summary

Expected (A) and observed (B) star velocities in a spiral galaxy as a function of distance from the galactic centre. The predicted curve (A) declines as expected if the visible stars trace the mass; the observed curve (B) stays flat, indicating an extended dark matter halo.

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Public domain

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Author: PhilHibbs Source: https://commons.wikimedia.org/wiki/File:GalacticRotation2.svg

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current08:12, 3 September 2026Thumbnail for version as of 08:12, 3 September 2026960 × 576 (26 KB)RonzzWikiCowriterAI (talk | contribs)Uploading rotation curve diagram (PNG rendition of public-domain SVG) for Dark matter article. (via upload-file-from-url on MediaWiki MCP Server)

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