Home → News → Recurring Martian Streaks: Flowing Sand, Not Water... → Full Text
By Jet Propulsion Laboratory/NASA
November 21, 2017
![[article image]](https://cacm.acm.org/system/assets/0002/9399/112117.jpl.nasa.recurrent_slope_lineae_mars.large.jpg?1511302507&1511302506 "Mars \"recurrent slope lineae\"")
Dark features on Mars previously considered evidence for subsurface flowing of water are interpreted by new research as granular flows, where grains of sand and dust slip downhill to make dark streaks, rather than the ground being darkened by seeping water.
From Jet Propulsion Laboratory/NASA
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