{
  "title": "Alien Dunes",
  "authors": "HiRISE",
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    "thumbnailURL": "https://static.uahirise.org/anews/2020-04-21/ESP_012900_1315.jpg",
    "excerpt": "This spectacular area was first imaged from the Context Camera, also onboard the Mars Reconnaissance Orbiter."
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  "identifier": "ESP_012900_1315",
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        "text": "HiPOD: 21 APRIL 2020"
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        "text": "Alien Dunes"
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    {
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        "caption": "Less than 1 km across. (NASA/JPL/UArizona)",
        "URL": "https://static.uahirise.org/anews/2020-04-21/ESP_012900_1315.jpg"
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        "text": "<p><br />This particular image shows a stunning array of a cluster of dunes with whirlwind tracks across them. Sand dunes are among the most widespread windblown features present on Mars. Their spatial distribution and morphology are sensitive to subtle shifts in wind circulation patterns and wind strengths.</p>"
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        "text": "<p><br />Dunes are particularly suited to comprehensive planetary studies because they are abundant over a wide range of elevations and terrain types. This image was acquired to aid in classification and volume estimates of dunes in the USGS global dune database.<br /></p>"
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    {
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        "layout": "fullBleedLayout",
        "caption": "A close-up in enhanced color. The streaks are dust devil racks. Less than 1 km across. (NASA/JPL/UArizona)",
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        "text": "<p>ID: <a href='https://uahirise.org/ESP_012900_1315'>ESP_012900_1315</a><br />date: 27 April 2009<br />altitude: 254 km<br /><br />NASA/JPL/UArizona</a></p>"
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        "text": "Black and white image is less than 5 km across. For images with scalebars, see the above ID link to our website.<br />"
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