Very gradual ground shifts are known to precede major landslides. Often these are on a scale of millimetres – too slight to even be noticed by local observers, but enough to be detected...
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Most of the craters on the Moon formed through impact processes. However, some craters, like the one visible in this portion of LROC NAC frame M131488521R, may be a volcano summit pit crater....
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NASA got a great deal of mileage out of the Mars rovers Spirit and Opportunity, which have lasted far longer than the 90 days originally expected of them when they landed in January 2004....
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A leopard seal rests on Antarctic sea ice between penguin-hunting forays.
Photograph by Paul Nicklen, National Geographic
Christine Dell’Amore
National Geographic News
Published August...
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