Chemical and dynamical analysis of binary stars orbiting center of Milky Way on retrograde orbit might come from one place - the biggest globular cluster in our galaxy Omega Centauri.
Milky way, dwarf galaxies nearby
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Astronomers led by Byeong-Cheol Lee have made a groundbreaking discovery, detecting a brown dwarf orbiting the red giant HD 18438. With a radius of 89 times that of the Sun, HD 18438 is now the largest known star to be orbited by an exoplanet or brown dwarf.