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Accidental Discovery Hints at a Hidden Population of Cosmic Objects – Exoplanet Exploration: Planets Beyond our Solar System nasa.gov - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from nasa.gov Daily Mail and Mail on Sunday newspapers.
With so much variety among the brown dwarf speeds already measured, it surprised the authors of the new study that the three fastest brown dwarfs ever found have almost the exact same spin rate (about one full rotation per hour) as each other. This cannot be attributed to the brown dwarfs having formed together or being at the same stage in their development, as they are physically different: One is a warm brown dwarf, one is cold, and the other falls between them. Since brown dwarfs cool as they age, the temperature differences suggest these brown dwarfs are different ages.
E-Mail IMAGE: Astronomers found a roaming comet taking a rest stop before possibly continuing its journey. The wayward object made a temporary stop near giant Jupiter. The icy visitor has plenty of... view more Credit: Credits: NASA, ESA, and B. Bolin (Caltech) After traveling several billion miles toward the Sun, a wayward young comet-like object orbiting among the giant planets has found a temporary parking place along the way. The object has settled near a family of captured ancient asteroids, called Trojans, that are orbiting the Sun alongside Jupiter. This is the first time a comet-like object has been spotted near the Trojan population.