Astronomy
Pie Chart of the Milky Way: Stars vs Other Matter
Last reviewed on 2026-05-22.
Astronomy — verifiable data, editable template
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The Milky Way's mass is overwhelmingly dominated by dark matter. Stars, gas, dust, and the central supermassive black hole together account for only about 15% of the galaxy's total mass.
The data
- Dark matter — 85 %
- Stars — 13 %
- Gas — 1.5 %
- Dust — 0.4 %
- Central black hole — 0.1 %
Source
NASA/Caltech Milky Way mass estimates.
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