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Curious Stains on Mars’ Summer Slopes Continue to be Seen

Recurring slope lineae (RSL) stain mountain slopes in Hale Crater. (NASA/JPL/University of Arizona)

Recurring slope lineae (RSL) stain mountain slopes in Hale Crater. (NASA/JPL/University of Arizona)

As the midsummer Sun beats down on the southern mountains of Mars, bringing daytime temperatures soaring up to a balmy 25ºC (77ºF), some of their slopes become darkened with long, rusty stains that may be the result of water seeping out from just below the surface.

The image above, captured by the HiRISE camera aboard NASA’s Mars Reconnaissance Orbiter on Feb. 20, shows mountain peaks within the 150-km (93-mile) -wide Hale Crater. Made from data acquired in visible and near infrared wavelengths the long stains are very evident, running down steep slopes below the rocky cliffs… but the process that’s responsible for them has yet to be confirmed.

Read the rest of my article on Universe Today.

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About Jason Major

Jason is a Rhode Island-based graphic designer, photographer, nature lover, space exploration fanatic, and coffee addict. In no particular order.

Posted on April 13, 2015, in Mars and tagged , , , , , , , , . Bookmark the permalink. 2 Comments.

  1. Reblogged this on THIRTY MADNESS and commented:
    True or False?

    Like

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