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|Spitzer||25. 8. 2003 - 30. 1. 2020||Ended|
||HD 166191||330 ly|
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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.