Third dark matter-free galaxy confirmed, supporting collision theory

techtimes.com

A third galaxy, NGC 1052-DF9, has been confirmed to lack dark matter, supporting a collision theory. This confirmation by Yale astronomers, using the Keck Observatory, found the galaxy's mass is entirely accounted for by visible matter, with no dark matter halo detected. The finding challenges alternative gravity theories like MOND and provides strong evidence for a specific galaxy formation mechanism involving high-speed collisions.


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Third dark matter-free galaxy confirmed, supporting collision theory | News Minimalist