Planetary Exploration from Mars! The importance of what is seen at Mars since mid-August decided us to display three pictures at the same time in the Editor's Choice Fine Picture section. Landscapes which NASA Twin rovers are sending from Mars are premieres in the domain of planetary exploration. First, this view from the inside of a Martian crater which was already displayed here as the late Editor's choice fine picture. It's Opportunity, the rover having landed at Meridiani Planum which took this picture from inside a large Martian crater dubbed "Endurance Crater". Martian surface is up there, about 70 ft above! Starting at the crater's rim the rover studied rock layers all the way down, searching for further clues about how much water flowed in this region of Mars as Opportunity had already found evidence for water at a first, much smaller crater, where it had landed by chance. On the other hand, just on the other side of Mars, in a vast ancient crater thought to be an ancient lakebed, Spirit, the twin rover to Opportunity, was getting higher above the plains, climbing the slopes of the "Columbia Hills", a ridge of Martian hills located East from the landing site. The second picture there is showing how the rover is looking upwards, to the hills' summit. The latter is about 300 ft above the surroundings, slightly left of this view. The rover is working there to find terrain more ancient that the one it studied in the plains. It actually found some rock outcrop bringing the evidence that water flowed too at this location on Mars. As it was climbing along the hills, the rover beamed back the third picture. Such a view is tremendous because it is showing the Martian landscape stretching beyond the foreground rock, reaching the crater's wall, this large and mountaneous range on the horizon. Spirit and Opportunity rovers are part of the NASA Twin Rovers mission , a mission which landed two identical rovers at Mars by 2004' beginning, an hemisphere apart from each other, searching for the evidence of a watery, life-friendly environment. pictures courtesy NASA/JPL, NASA/JPL/Cornell, site 'Amateur Astronomy' based on a picture NASA/JPL