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Thread: Clouds on Mars

  1. #11
    I recall seeing photos of what appeared as blown down trees on Mars that were petrified.

  2. #12
    Senior Member majicbar's Avatar
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    Quote Originally Posted by CasperParks View Post
    I recall seeing photos of what appeared as blown down trees on Mars that were petrified.
    ...That was an optical illusion, closer examination never showed shadows, it was all surface effects.

  3. #13
    Quote Originally Posted by majicbar View Post
    ...That was an optical illusion, closer examination never showed shadows, it was all surface effects.
    Thanks... It was so long ago, couldn't recall where or when I had seen it.

  4. #14
    Senior Member majicbar's Avatar
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    Quote Originally Posted by CasperParks View Post
    Thanks... It was so long ago, couldn't recall where or when I had seen it.
    Mars is a really odd environment. The atmosphere is near the triple point of Carbon Dioxide in Winter, but also Spring and Fall, so it can often go from hard compact frozen "Dry Ice", break off, slide or roll and expose unoxidized ground below which cause what looks like dark flows. I'm still convinced there are real water flows as well, but when temps exclude water, Carbon Dioxide in the form of some kind of "Dry Ice" is a logical actor.

    http://www.space.com/7775-strange-ma...-illusion.html

    http://apod.nasa.gov/apod/image/1211...s_mro_2560.jpg

    http://hirise-pds.lpl.arizona.edu/PD...ED.abrowse.jpg
    Last edited by majicbar; 06-23-2013 at 07:14 AM.

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