The Devil's Tower seen from the west. On this side is the climbing route known as "El Matador" (Photo: Mick Haupt ).
Standing guard over the valley, Sentinel Rock’s near-vertical north face was carved by dramatic rockfalls that split the cliffside. Weathering and erosion continue to sculpt Yosemite Valley, and ...
One main goal of NASA's Mars 2020 mission is to determine when conditions on the planet were conducive to the formation of liquid water. Hence the target Jezero crater, seemingly a lakebed with a ...
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