With the help of Mars Reconnaissance Orbiter (MRO) researchers have detected cumulative growth of troughs, which are believed to be infant version of larger features known as Martian Spiders. These spiders found only in the south polar region of the Red Planet.These erosion-shaped troughs formed from the same thawing- carbon dioxide process which is believed to form the spider-like features.
Talking about the discovery, Ganna Portyankina of the University of Colorado said
Moreover Portyankina discovered that these troughs are found in sand-dune areas, it proves to be a factor in how the baby spider’s form. They keep tracing year-to-year changes in them with the help of MRO’s High Resolution Imaging Science Experiment (HiRISE) camera.
These five images taken from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter shows different stages of Martian Spiders. The dark fans shown in image is resulting from the same thawing process. Carbon-dioxide ice does not occur on Earth naturally.During Winter Carbon-Dioxide ice covers the ground On Mars in areas near both the poles with spidery terrain. This is how dark fans appear in these areas each spring.
Mars Reconnaissance Orbiter
The MRO began orbiting Mars in 2006 is a multipurpose spacecraft designed to conduct exploration and reconnaissance of Mars from orbit. It was built by Lockheed Martin at the cost of US$720 million under the supervision of Jet Propulsion Laboratory.