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Striped or Spotted? Winds and Jet Streams Found on the Closest Brown Dwarf Planetary scientists wondered if bands of winds or swirling storms dominated the atmospheres of brown dwarfs. UArizona-led research has solved the mystery. By Mikayla Mace Kelley, University Communications Jan. 7, 2021 Using high-precision brightness measurements from NASA's TESS space telescope, astronomers found that the nearby brown dwarf Luhman 16B's atmosphere is dominated by high-speed, global winds akin to Earth's jet stream system. This global circulation determines how clouds are distributed in th...