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Thread: Strange Intersecting Sand Dunes on Mars

  1. #1
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    Strange Intersecting Sand Dunes on Mars

    In our exploration of Mars, we’ve seen some strange, naturally occurring shapes. Polygons – a shape with at least three straight sides and angles, typically with five or more – have been seen in several different Martian landscapes, and scientists say these shapes are of great interest because they often indicate the presence of shallow …
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    The post Strange Intersecting Sand Dunes on Mars appeared first on Universe Today.


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  2. #2
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    The first question that needs to be answered is, are the photos manipulated?

    NASA admits to manipulating photos of the rover, which is rather perplexing, so are all photos manipulated and to what extent?

  3. #3
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    Do We Have Anything Similar?

    Link to best similar Earth structure I have found so far:

    https://dissolve.com/stock-photo/Aer...1-D1024-94-711

  4. #4
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    Quote Originally Posted by Ely View Post
    The first question that needs to be answered is, are the photos manipulated?

    NASA admits to manipulating photos of the rover, which is rather perplexing, so are all photos manipulated and to what extent?
    Yes, it's "manipulated" in that the photographic data has been processed in order to acheive a useful result. This isn't an average snapshot being pulled from a memory card. The HiRISE camera employs "14 electronic detectors, each covered by a filter in one of three wavelength bands: 400 to 600 nanometers (blue-green), 550 to 850 nanometers (red), or 800 to 1000 nanometers (near infrared), producing color images in the central portion of the field of view." [Source: NASA, HiRISE Tech Specs]

    Sometimes, the image data is processed to resemble what the human eye might see. Other times, an emphasis on the IR spectrum is needed. There's even an algorithm to aid in the detection of martian dust devil tracks. See more from Google Scholar.
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  5. #5
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    To avoid semantic discussions that lead to distracting pontification a, I'll just use a first hand quote;

    As Curiosity’s Engineering Camera Team Leader Justin Maki explains in the video below, “The rover is imaging the deck while the arm is behind the camera, and then to image the ground … again the arm is behind the camera when taking these pictures. When we stitch them all together, you don’t see the arm in any of the pictures.”

  6. #6
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    The images look like crackle paint that is achieved by shrinkage underneath a flexible skin, or like patterns on a vibrating plate with sand particles, in higher modes of vibration. Or, I have seen similar patterns in miniature from distributed static charge acting on particles or , in my experience, melting polymer skin. Only these images are much larger in scale. If a crater is created hot and cools by radiation from the top, these might be from cooling shrinkage?
    sicut vis videre esto
    When we realize that patterns don't exist in the universe, they are a template that we hold to the universe to make sense of it, it all makes a lot more sense.
    Originally Posted by Ken G

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