Saturday, June 22, 2013

Hollows in a Crater's Central Peaks


Focusing on the central peaks of a large unnamed crater between Stravinsky and Velazquez, this image takes a close look at hollows on both the crater floor and the peaks. It is interesting to note that the hollows seem to follow the shape of the central peak ring, and are seen in lower concentrations on the crater floor. Another interesting observation is that the large hollow in the center of the image has a crisp, fresh appearance. This suggests that some hollows are relatively young features, and could be in the process of forming today.

Date acquired: May 10, 2011
Image Mission Elapsed Time (MET): 213547274
Image ID: 237117
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 43.71°
Center Longitude: 290.9° E
Resolution: 21 meters/pixel
Scale: This image from corner to corner is approximately 15 km (9 mi.)
Incidence Angle: 68.0°
Emission Angle: 17.3°
Phase Angle: 85.4°

Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

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