Gallery: Strange Dark Streaks on Mars Get More and More Mysterious

  • Image may contain Modern Art Art and Painting
    Photos by NASA/JPL-Caltech/UA/JHU-APL
    01

    pixellinae-crop

    A colorful grid of pixels overlaid on Martian recurring slope lineae, indicating different iron-bearing minerals.
  • Image may contain Soil Nature Ground Outdoors Sand Landscape Panoramic Scenery and Desert
    Photos by NASA/JPL/University of Arizona
    02

    Newton-IRB-A

    Gullies flow out over Palikir Crater
  • Image may contain Soil Ground Outdoors Nature Sand Texture and Rock
    Photos by NASA/JPL/University of Arizona
    05

    Newton-IRB-A.ORTHO-stretch-enh-crop2

    Dark streaks spread over the floor of Newton crater.
  • Image may contain Mountain Outdoors Nature Wilderness Landscape Panoramic Scenery and Plant
    Photos by NASA/JPL-Caltech/Univ. of Arizona
    06

    newtoncrater

    Enhanced using 3-D modeling, this image shows flows that appear in spring and summer inside Newton crater.
  • Image may contain Outdoors Nature Sand and Water
    Photos by NASA/JPL/University of Arizona
    07

    Horowitz-IRB-A.ORTHO-cropA-leg-crop

    Recurring slope lineae in Horrowitz Crater appear and recede over time.
  • Image may contain Nature Outdoors Scenery Soil and Landscape
    Photos by NASA/JPL-Caltech/Univ. of Arizona
    08

    crateredge

    Dark streaks in a crater on the floor of Valles Marineris, near the Martian equator.
  • Image may contain Nature Outdoors Sand Ground Rock and Soil
    Photos by NASA/JPL/University of Arizona
    09

    Fresh-crater-RED-A-O-RSLcrop-leg-crop

    Potentially briny flows move through Raga Crater
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