Most galaxies seemed to be missing a huge proportion of the matter we expected them to have – now researchers may have found its hiding spot, but the discovery contradicts accepted models of galaxy formation
Many large galaxies were long thought to be missing a huge proportion of matter – but it’s now been found, and that’s an even bigger problem for our understanding of the universe.
Observations over the course of the last decade or so have shown that galaxies about the size of the Milky Wayappear to have far less baryonic matter – meaning normal matter, not dark matter – than we expect. This expectation is based on the ratio of dark matter to regular matter …
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