Bestselling Learn Guitar on Android! http://bit.ly/LearnGuitarAndroid On Thursday August 4th, NASA made a stunning announcement: it believes it has discovered flowing saltwater on the surface of Mars. New satellite images, spanning from early spring of one Martian year to mid-summer the following year, depict growing dark finger-like features that sweep across the terrain. NASA says: Repeated observations have tracked the seasonal changes in these recurring features on several steep slopes in the middle latitudes of Mars' southern hemisphere. The features could be the first definitive evidence of present-day liquid water on the Red Planet, say experts. The water may not necessarily be flowing over the ground, according to the scientists. Some clues suggest it could be buried but affecting the surface to make it appear dark. Saltiness lowers the temperature at which water freezes. This means seasonal salty liquid water could exist in mid-latitude regions of Mars, despite the chilliness of the planet's 'warm' season. If this turns out to be the case, the sites may provide a promising hunting ground for signs of life on Mars... which may, or may not, be a good thing. So what do you think? Is there life on Mars? Or are we alone in our Solar System? Leave a comment below and let us know. http://www.nasa.gov/mission_pages/MRO/news/mro20110804.html http://www.huffingtonpost.com/2011/08/04/flowing-water-mars_n_918860.html http://www.dailymail.co.uk/sciencetech/article-2022513/Strongest-signal-water-Mars-scientists-streams-spilling-crater-rims.html
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