On July 18, 2023, an algorithm called HelioLinc3D identified a 600-foot "potentially hazardous asteroid," which has since been christened "2022 SF289."
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VIDEO: CosmoView Episode 25: Caught Speeding: Clocking the Fastest-Spinning Brown Dwarfs view more
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Astronomers at Western University have discovered the most rapidly rotating brown dwarfs known. They found three brown dwarfs that each complete a full rotation roughly once every hour. That rate is so extreme that if these failed stars rotated any faster, they could come close to tearing themselves apart. Identified by NASA s Spitzer Space Telescope, the brown dwarfs were then studied by ground-based telescopes including Gemini North, which confirmed their surprisingly speedy rotation.