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Permanently shadowed, radar-bright regions on Mercury
Filed under pretty pictures, explaining science, Mercury, hydrology
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Shown in red are areas of Mercury’s north polar region that are in shadow in all images acquired by MESSENGER to date. The polar deposits imaged by Earth-based radar are in yellow. This comparison indicates that all of the polar deposits imaged by Earth-based radar are located in areas of persistent shadow as documented by MESSENGER images.
NASA / JHUAPL / CIW / NAIC, Arecibo Observatory
Updated from N. L. Chabot et al., Journal of Geophysical Research, 117, doi: 10.1029/2012JE004172 (2012).
Original image data dated on or about November 29, 2012
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