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Tag: Mosaic

MOSAiC expedition selects ice floe for drift through Arctic Ocean

MOSAiC expedition selects ice floe for drift through Arctic Ocean

Science
Oct. 4 (UPI) -- Researchers with the MOSAiC expedition have found an ice floe to anchor the German research icebreaker Polarstern to for a year-long. Late last month, a team of researchers with the Alfred Wegener Institute's Helmholtz Center for Polar and Marine Research set sail from Norway and entered the Laptev Sea, a marginal sea of the Arctic Ocean. Their journey into the center of the Arctic was aided by the icebreaker Akademik Fedorov, operated by Russia's Arctic and Antarctic Research Institute. After several days of searching for a suitable ice floe, using both helicopter surveys and satellite images, scientists convened and agreed to attach a floe located at 85 degrees north and 137 degrees east. The floe measures approximately 1.5 by 2 miles. Having settled on a suitable floe,...
Mosaic showcases Ceres' brightest bright spot

Mosaic showcases Ceres' brightest bright spot

Science
Sept. 7 (UPI) -- A new mosaic image shared Friday by NASA showcases one of Ceres' bright spots. The dwarf planet's bright spots were first discovered and photographed in 2015. In the time since, high resolution images have offered scientists clearer and clearer views of the bright spots. Ceres' brightest spot is located on a feature called Cerealia Facula, found in the Occator Crater. The latest mosaic combines several photographs of the feature, some from altitudes as low as 22 miles above the dwarf planet's surface. "The mosaic is overlain on a topography model based on images obtained during Dawn's low altitude mapping orbit," according to NASA. NASA scientists believe Ceres' bright spots are evidence of geologic activity. When Dawn was first approaching Ceres, only a couple of large ...