October 6, 2008
Image Mission Elapsed Time (MET):
Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
250 meters/pixel (0.16 miles/pixel) near the bottom of the image
The diameter of Vivaldi crater is 213 kilometers (133 miles)
9,800 kilometers (6,100 miles)
One of the more dramatic craters seen by MESSENGER during its first flyby of Mercury this past January was Vivaldi
. Right at the day/night terminator, the crater was slipping away into darkness as Mercury slowly rotated. Two days ago, MESSENGER made its second flyby of the innermost planet, and once again captured a view of Vivaldi, this time at sunrise. Long shadows are draped across the floor of this feature, which is actually considered a "small" double-ring basin despite having a diameter of 213 kilometers (133 miles). The low Sun illumination also highlights ridges, valleys, and chains of craters radiating away from Vivaldi.
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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