New pictures of mars show areas which have valleys which appear to have been created by flowing water.
Water isn’t present in the images, suggesting that variations in the seasons could result in water being present on the planet during certain times of the year.
To verify this discovery, spacecraft would have to be heavily sterilised before being sent to investigate the area, since any foreign contaminants would skew any data that suggests life could be present there.
Nevertheless, it is a very interesting discovery, suggesting the possibility of life on the relatively easily accessible planets around us could be possible, or, if it is not possible to find life there, that we could sustain it there under the right conditions.
For more, check out http://www.nature.com/news/water-seems-to-flow-freely-on-mars-1.14343
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