“Heresy!” -Controversial Alternative to General Relativity’s Theory of Gravity –‘Does Not Require Existence of Dark Matter’

An international group of astronomers has revived a previously debunked theory of gravity, arguing that motions within dwarf galaxies would be slower if close to a massive galaxy. The theory, MOND, is a controversial alternative to general relativity, the prevailing Einstein-inspired understanding of the phenomenon of gravity, that requires dark matter to exist, but this has never been proved. MOND does not require dark matter.

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