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Last updated on April 23, 2014 at 21:24 EDT
Looking in Detail at a Spectacular Double-Ring Basin
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Looking in Detail at a Spectacular Double-Ring Basin

November 10, 2009
This spectacular 290-kilometer-diameter double-ring basin seen in detail for the first time during MESSENGER's third flyby of Mercury bears a striking resemblance to Raditladi basin, observed during the first flyby. This still-unnamed basin is remarkably well preserved and appears to have formed relatively recently, compared with most basins on Mercury. The low numbers of superposed impact craters and marked differences in color across the basin suggest that the smooth area within the innermost ring may be the site of some of the most recent volcanism on Mercury.