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The Lower Atmosphere of Pluto Revealed

Matt_dk writes "Using ESO's Very Large Telescope, astronomers have gained valuable new insights about the atmosphere of the dwarf planet Pluto. The scientists found unexpectedly large amounts of methane in the atmosphere, and also discovered that the atmosphere is hotter than the surface by about 40 degrees, although it still only reaches a frigid minus 180 degrees Celsius. These properties of Pluto's atmosphere may be due to the presence of pure methane patches or of a methane-rich layer covering the dwarf planet's surface."

14 of 109 comments (clear)

  1. i see the future by thhamm · · Score: 3, Funny

    cue the "methane" & "uranus" jokes.

    1. Re:i see the future by Machtyn · · Score: 3, Funny

      So, now Pluto gets to be the butt of all the jokes.

    2. Re:i see the future by Amazing+Quantum+Man · · Score: 4, Funny

      That's "Gravitationally Challenged" planet, you insensitive clod!

      --
      Fascism starts when the efficiency of the government becomes more important than the rights of the people.
  2. Mostly by tverbeek · · Score: 3, Funny

    I've actually just transmitted an update to the article about Pluto in the Hitchhiker's Guide to the Galaxy. It now reads "Mostly Boring."

    --
    http://alternatives.rzero.com/
  3. Re:What have we learned? by Anonymous Coward · · Score: 3, Informative

    methane doesn't smell of anything. its the other stuff such as SO2 that causes farts to smell.

    if methane smelt bad we wouldn't have to add thiols(really stinky molecules) to mains gas to detect leaks.

  4. Re:Quite a long and interesting article... by Canazza · · Score: 5, Informative

    um, Charon?

    --
    It pays to be obvious, especially if you have a reputation for being subtle.
  5. Rubbing it in by orkybash · · Score: 3, Funny

    "new insights about the atmosphere of the dwarf planet Pluto"

    Aww, come on, you guys are just rubbing it in now!

  6. So... by FlyByPC · · Score: 3, Insightful

    Given that it has both a moon and an atmosphere, are they going to admit that it's a planet (albeit a weird one) -- or do we let the definition become so strict that soon nothing qualifies as a planet anymore?

    --
    Paleotechnologist and connoisseur of pretty shiny things.
    1. Re:So... by Canazza · · Score: 3, Interesting

      "A dwarf planet, as defined by the International Astronomical Union (IAU), is a celestial body orbiting the Sun that is massive enough to be rounded by its own gravity but has not cleared its neighbouring region of planetesimals and is not a satellite."

      By this definition, Neptune isn't a planet, it's a dwarf planet, because it hasn't cleared Pluto out of it's neighbouring region...

      --
      It pays to be obvious, especially if you have a reputation for being subtle.
    2. Re:So... by wooferhound · · Score: 4, Insightful

      Earth will Always be a planet and all other space objects will be compared against it.
      If we get too picky then Earth will be the Only planet as nothing else will fit the description of Earth.

      --
      We are Dead Stars looking back Up at the Sky
    3. Re:So... by M8e · · Score: 3, Funny

      Do you really want to memorize over 100 elements? NO! There should only be five! Aether, Air, Earth, Fire and Water!

      Do you really want to memorize over 100 countries? NO! There should only be one per continent!

  7. Eris by corsec67 · · Score: 3, Informative

    If Pluto gets called a planet, then Eris would also be called a planet, since it is bigger than Pluto. Otherwise "Planet" would be a very arbitrary definition.

    --
    If I have nothing to hide, don't search me
    1. Re:Eris by mysticgoat · · Score: 4, Funny

      Eris should be called a planet.

      If you don't invite her to the party, there will be hell to pay.

  8. Re:liquid methane by jschen · · Score: 4, Informative

    The boiling point depends on the atmospheric pressure. Boiling points are typically reported based on sea level on Earth. With a much lower atmospheric pressure on Pluto, boiling points will drop.