29 Sep 2010
With the exception of recent impacts (such as this one) into the floor material of Copernicus, much of the northwestern floor of Copernicus appears smooth and relatively featureless (upper right corner). This region on the crater floor appears similar to mare basalt flows, but studies show that volcanism has not shaped the landscape of Copernicus' interior. Instead, it is possible that a vast volume of impact melt was created during impact and cooled differentially across the crater floor such that some areas appear smooth while others are hummocky. LROC NAC M135317661L, image width is 520 m [NASA/GSFC/Arizona State University].
10 Aug 2010
Most of the craters on the Moon formed through impact processes. However, some craters, like the one visible in this portion of LROC NAC frame M131488521R, may be a volcano summit pit crater. Crater diameter is ~400 m, the image width is 923 m, and illumination is from the right [NASA/GSFC/Arizona State University].
03 Aug 2010
28 Jul 2010
The small, irregular terraces on the walls of Bürg Crater and the debris piles and outcropping wall material, with strong variations in reflectance, only hint at the geologic diversity of this complex crater. Bürg's crater rim is on the upper left, with downslope direction toward the lower right. Illumination is from the right, image width is 870 m, LROC NAC M116139887R [NASA/GSFC/Arizona State University].
02 Jul 2010
16 Jun 2010
19 May 2010
06 Nov 2009
Interactions between the mobilized material excavated during impact and the pre-existing surface formed dune-like and trough-like features in the ejecta blanket of Galvani B, a 15-km diameter crater. North is up, image resolution is 0.58 m/pixel [NASA/GSFC/Arizona State University].
15 Oct 2009
Many boulder trails are found on the lunar crater walls and basin massifs. Some of the trails are smooth and nearly straight while others are curvy or gouge into the surface. In many cases by following a boulder's trail you are led back to its point of origin, useful information for a future geologist sampling otherwise unreachable points. Image width is 600-m across, north is up, and the boulder in the lower left-hand corner is 15-m across, unnamed 15-km diamater crater southwest of Rowland crater [NASA/GSFC/Arizona State University].
07 Oct 2009
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Two oxbow bends along the length of a sinuous rille located on a mare-filled crater floor. The tight twists and turns of the rille suggest that a very turbulent lava flow formed this rille. Subarea of uncalibrated LROC NAC frame M102672335L; image width is 1.56 km across and north is up [NASA/GSFC/Arizona State University].