A massive galaxy without dark matter is a cosmic puzzle

Our picture of cosmic evolution could be challenged by the discovery of a massive galaxy that appears to be lacking dark matter.

Dark matter, which makes up about 85% of the matter in the universe, appears to be absent from the galaxy NGC 1277, which is part of the Perseus cluster. galaxies. The galaxy, located 240 million light-years from Earth, is the first Milky Wayconglomerate-sized conglomerate of stars, planets, dust and gas devoid of dark matter.

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