A photo from open sources
Mysterious winding ravines discovered on West asteroid – narrow channels that cut through some craters, very similar to traces water flows, according to the results of the analysis of images of an asteroid, made by the American probe Dawn, the press service said NASA Jet Propulsion Labs. “Direct depressions that we see on West – these are textbook examples of work traces streams of dry material such as sand. We met them on the moon and expected to find on West. But these meandering ravines are something unusual, we did not expect to find them, and still try to understand them nature, “says Jennifer Scully of University of California Los Angeles, which led the group decryption of pictures. In the images from the Dawn probe, two types were found narrow channels that cut through the walls of young craters on the West – one look like straight gutters, while others are more meandering, and end rock outflow cones. “On Earth, similar formations, for example, in Meteor Crater in Arizona, created by streams of liquid water. On Mars the question of the mechanisms of occurrence of such gullies still remains debatable. We need to very carefully analyze the data on these ravines on the west before definitely talking about their origin, “notes Dawn’s project’s supervisor Christopher Russell Currently scientists offer different hypotheses for the occurrence of Martian ravines. Some believe that they arose at the site of water flows, others believe that these are traces of carbon dioxide, Martian “dry ice”. One 2010 study showed that carbon dioxide frost could lead to the appearance of sand streams on the red planet. Dawn probe It was launched on September 27, 2007, and on July 18, 2011 for the first time in The story went into orbit around the asteroid Vesta. This is the first a spacecraft, which, having studied from orbit one celestial body – West, came down from her and continued on to another – to the dwarf planet Ceres.
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