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comets    音标拼音: [k'ɑməts]

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  • New Research in Cometary Structures - NASA Solar System Exploration
    New Research in Cometary Structures Diane Farrar Ames research Center Moffett Field, Calif August 5, 1994 Release No 94-37 MOUNTAIN VIEW, Calif -- Slight temperature differences in the two comet-forming regions of the solar system cause the water-ice largely comprising comets to form in different ways, NASA researchers says
  • Thanks - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • Radar Astrometry of Small Bodies: Detection, Characterization . . .
    Radar astrometry reduces trajectory uncertainties by orders of magnitude, thereby improving prediction, targeting, and impact probability estimates for small-bodies, while characterizing some at levels comparable to a spacecraft flyby This improves resource use for ground and flight investigations
  • Solar System Exploration
    The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1 3 million asteroids, and about 3,900 comets
  • Psyche Raw Image: Imager A - NASA Solar System Exploration
    The Psyche spacecraft acquired this image using its Multispectral Imager Camera A and the Blue filter (495)
  • In Depth | Our Solar System – NASA Solar System Exploration
    Introduction The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids
  • Directory - NASA Solar System Exploration
    Cynthia Shelton is keenly interested in all things science A voracious learner, she has spent 10 years living on a 30' sailboat (a kind of spaceship lifestyle), becoming a licensed falconer, writing comic books about real life, and finding ways to connect with her communities
  • Delete Confirmation - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • Directory - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • RPS 3D Viewer - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system





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