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Yale Astronomers Map Row of Galaxies Lacking Dark Matter
Yale astronomers discovered NGC-DF9, a dwarf galaxy 67 million light-years away that, like DF2 and DF4, appears to be missing dark matter.
Yale astronomers have identified a third galaxy, NGC-DF9, located 67 million light-years from Earth, that appears to lack dark matter, a theorized invisible material essential to most galaxy formation. This discovery joins previously identified DF2 and DF4, and all nine galaxies including DF9 now appear aligned in a straight line. Researcher Michael Keim, a Ph. D. student in astrophysics at Yale’s Graduate School of Arts and Sciences, stated that a line of galaxies lacking dark matter…
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