Dwarf Galaxy orbits defy Dark Matter Theory

A study published in “Science” today indicates that dwarf galaxies orbiting Centaurus A galaxy share the same orbital plane rather than having random orbits.

This, unless it is a fluke, challenges the current model of how dark matter interacts gravitationally. This comes only 3 weeks after the report of galactic centre offsets which also is not consistent with the standard dark matter theory.

The process of measuring dwarf galaxy orbits is, however, a time-consuming process, so we will not learn for some years whether other sets of dwarf galaxies share orbital planes, and therefore whether the dark matter model needs revision.

Scientific American article

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