The Milky Way seems to be missing nearly half of its regular matter

Measurements of a blast of radio waves passing through our galaxy have shown that the Milky Way's proportion of visible matter is 40 per cent lower than the rest of the universe

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Supernova - Wikipedia

The Milky Way's Missing Mass: Partially Found

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Universe's 'missing matter' finally found in the space between

Universe's 'missing matter' finally found in the space between

Strange Ghostly Galaxies Lacking Dark Matter Confirmed by Hubble Data

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The Milky Way is missing some dark matter: Scientists baffled to

Astronomers Find Missing Mass Of The Universe In Vast Cosmic Filaments

Epic galaxy collision hints at answer to missing matter mystery

The hunt for dark matter: The universe's mysterious gravitational

Dark matter and hydrogen make up Milky Way's missing mass

The Milky Way is warped, and it might be the work of dark matter