<ul><li>A Chinese group discovered a swirling mass of hydrogen outside the Milky Way disc named AC G185.0-11.5, challenging the concept of 'dark galaxies' that rely on adding dark matter.</li><li>Quantised inertia (QI) theory predicts the velocity of material at the edge of a system based on low acceleration, accurately predicting the newly observed system's orbital speed.</li><li>The gas and dust mass of the observed system ranges from 3x10^7 to 4.7x10^8 solar masses, with QI predicting an orbital speed of 44.5 +/- 14.5 km/s, closely matching the observed rotational speed of 42.2 +/- 2 km/s.</li><li>This discovery challenges the traditional notion of dark matter, with QI providing a more accurate explanation for the observed behaviors of these galactic systems.</li></ul>

No Need for Dark Galaxies

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