posted on Mar, 21 2014 @ 12:39 AM
The two photographs were taken over a Martian year apart.
Thought this was interesting...passing along the info.
The powerful HiRISE camera on NASA's Mars Reconnaissance Orbiter (MRO) imaged the channel, which is found on the slope of a crater wall in the Red
Planet's mid-southern latitudes, on May 25, 2013. The feature was not present in HiRISE photos of the area taken on Nov. 5, 2010. NASA unveiled the
image on Wednesday (March 19).
A new gully has appeared on a sloped crater wall on Mars. The channel, which was absent from images in November 2010 but showed up in a May 2013
photo, does not appear to have been formed by water. Exactly what caused this Red Planet rivulet remains a mystery.
When I fist saw the title of the article water came to mind..but if not water, what?
Though it looks water-carved, the gully is much more likely to have been formed when carbon dioxide frost accumulated on the slope and grew heavy
enough to avalanche down and drag material down with it
The gullies resemble rivers here on earth. Beautiful.
edit on 21-3-2014 by Jennyfrenzy because: Add
edit on 21-3-2014 by Jennyfrenzy because: Pic
edit on 21-3-2014 by Jennyfrenzy because: Oops