New images from Mars Express! They show a beautiful example of a dried out river valley network, a sign that #water was once flowing on the surface of #Mars. Read more: https://t.co/7VmpIlaKEM pic.twitter.com/ma7jqCtpyM — ESA (@esa) February 21, 2019
New images from Mars Express! They show a beautiful example of a dried out river valley network, a sign that #water was once flowing on the surface of #Mars. Read more: https://t.co/7VmpIlaKEM pic.twitter.com/ma7jqCtpyM