Why we need to ditch dark matter for a new theory of gravity

The Next Web
By The ConversationJul 11, 2022, 7:35 am197 pts
We can model the motions of planets in the Solar System quite accurately using Newton’s laws of physics. But in the early 1970s, scientists noticed that this didn’t work for disc galaxies – stars at their outer edges, far from the gravitational force of all the matter at their center – were moving much…

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