A massive galaxy far from Earth seems to be entirely devoid of dark matter, contrary to all accepted cosmological models.
Our picture of cosmic evolution could be thrown into doubt by the discovery of a massive galaxy that seems to lack dark matter.
This fact resulted in scientists theorizing that all large galaxies are wrapped in an envelope of dark matter, and this has become an important assumption in the development of theories of galactic evolution. But the discovery of a galaxy that appears to haven no dark matter challenges that assumption.
This revealed that the distribution of NGC 1277's total mass — which should include dark matter — was the same as the distribution of the mass of its everyday matter contents, in other words, stars, dust, gas and planets. That means that within the galaxy's radius, there can't be a dark matter content any greater than 5%, but the findings are more consistent with a complete absence of dark matter in NGC 1277.
Where did relic galaxy's dark matter go?The scientists behind this revelation have a few ideas about why NGC 1277 is so deficient in dark matter.
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