Um Véu Sobre Titã


(Crédito: NASA/JPL-Caltech/Space Science Institute.)

Esta imagem fantástica de Titã foi obtida pela sonda Cassini no dia 19 de Abril de 2011, a uma distância de 137 mil quilómetros. Nela pode ver-se a fina e delicada camada de névoa que envolve a lua, em especial sobre o pólo norte. A escala da imagem é de 8 quilómetros por píxel.

3 comentários

  1. Olá,

    Muito bom esse livro. Também o tenho. 🙂
    Curiosamente usei imagens obtidas no mesmo dia num post sobre as propriedades físicas da atmosfera titatiana: http://www.astropt.org/2011/04/23/uma-janela-para-a-superficie-de-tita/. 😀

    • Dinis Ribeiro on 27/07/2011 at 09:21
    • Responder

    Conheço pessoalmente o autor deste livro, que aproveito para vos sugerir:

    Titan Unveiled: Saturn’s Mysterious Moon Explored
    http://www.amazon.com/Titan-Unveiled-Saturns-Mysterious-Explored/dp/0691125872

    Editorial Review From Booklist:

    Saturn’s moon Titan, presently being explored by the spacecraft Cassini, has astonishing similarities to Earth—a thick atmosphere, weather, seasons, rivers, and lakes.

    And defying the demystification that comes with discovery, Titan’s allure seems only to increase the more scientists learn about it.

    From a historical baseline of pre-Cassini knowledge, the authors outline questions this spacecraft was designed to answer, prime among them, the appearance and nature of Titan’s surface.

    Obscured by haze, the landscape has been exposed by radar, special optical cameras, and the Huygens lander.

    The authors cover in detail the information gathered by these and other instruments, which impart a practical sense of how scientists work from raw data toward finished interpretations.

    A concrete example is data collected by coauthor Lorenz’s impact probe, which hints that Titan’s surface is like wet sand—but instead of water as on Earth, the liquid is methane.

    Including amazing photographs of Titan’s evident geological dynamism, Lorenz and Mitton’s work has a high “wow” factor that will thrill buffs and may spur students toward a planetary science career. –Gilbert Taylor

    1. Olá Dinis,

      tenho o livro. É realmente muito bom.

      Ab.

      Luís

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