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January 2014 Volume 7 No 1

Dark streaks that appear on the surface of Mars during warm seasons have been observed at the mid-latitudes and tentatively attributed to the flow of briny water. Imagery from the Mars Reconnaissance Orbiter over multiple Mars years suggests that these seasonally active features are also present in equatorial regions, where liquid surface water is not expected. The image shows dark, narrow flows called recurring slope lineae that are more than 1 km long in this portion of Eos and Capri Chasma in eastern Valles Marineris, Mars. The image is in enhanced infrared-shifted colour, and downhill is to the right or the bottom.

Article p53

IMAGE: NASA/JPL/UNIVERSITY OF ARIZONA

COVER DESIGN: DAVID SHAND

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