According to NASA officials, the dark streaks captured by the HiRISE are recent and were likely formed between early November 2010 and late May 2013. The difference in the photographs taken by the Mars Reconnaissance Orbiter show a new streak in a region called Terra Sirenum.

It is unclear as to how the gully may be formed on the Red Planet. According to sources, NASA has suggested that carbon dioxide is the main trigger behind formation of the gully.

While NASA suspects carbon dioxide responsible, the gully’s formation may in fact support the theory that liquid water may still flow in some regions of the Red Planet. According to sources, if water does flow across the surface of present-day Mars from time to time, the planet would be able to host life.

Scientists continue their search to trace water on the planet. The question however remains as to whether NASA will make changes to its Curiosity rover to find similar spots close to Mount Sharp, where it is presently on the look-out for signs of water.


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