Galaxies tangled in science and spirit photo of the day for Sept. 7, 2026 - Space
·Sep 7, 2026
Source: Space
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Triplet of ‘Ghostly’ Galaxies Hints at What Dark Matter Is — and Isn’t - Quanta Magazine
A collision may have left these galaxies without dark matter. That spells trouble for alternative gravity theories. The lack of dark matter in galaxies DF2, DF9, and DF4 (clockwise from left) was a shock to scientists, who speculate that they formed after an ancient collision.
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