Featured Images

Ejecta from Copernicus

One of the geologic features that makes Copernicus crater special is its extensive, high-reflectance ejecta rays that extend across nearby mare and superpose (overlap) ejecta from other craters - Copernican ejecta extends more than 500...

Published on 30 Sep 2010

Copernicus Crater and The Lunar Timescale

LROC NAC view of the southern rim of Copernicus crater. Downslope direction is to the upper left and the fragmented material demarcates the rough edge of the crater rim. The surface texture is still sharp and crisp indicating a...

Published on 28 Sep 2010

Necho's Terraces

Closeup view of the spectacular western terrace of Necho crater. NAC image M134388215R; scene width is 660 m [NASA/GSFC/Arizona State University].

Published on 31 Aug 2010

Forked Impact Melt Flows at Farside Crater

Impact melt flow split into two distinct segments. The source crater is 2.5 km to the south in a region of the farside highlands ENE of Mare Moscoviense. Image width is 1.3 km, and the pixel width is 1.25 m, NAC Image M112902715L,...

Published on 22 Jun 2010

Exposed Fractured Bedrock in the Central Peak of the Anaxagoras Crater

NAC image of the Anaxagoras crater floor, including a portion of the crater's anorthositic central uplift. The boulders perched on ridges are eroding out of densely fractured bedrock. Image number M122273232R [NASA/GSFC/Arizona State...

Published on 14 Apr 2010

Out of the Shadows: Impact Melt Flow at Byrgius A Crater

Spectacularly preserved viscous flow on the NE rim of Byrgius A (19 km diameter) crater. This flow has a form similar to lava flows on the Earth - however it formed as a result of an asteroid or comet slamming into the Moon at...

Published on 02 Feb 2010

King Crater's Unusual Melt Pond

A Constellation Program Region of Interest near the northeast edge of the unusually large melt pond adjacent to the lunar far side crater King. The boundary between the dark, coherent impact melt rock at the lower left of the image and...

Published on 26 Jan 2010

Fresh Copernican Crater

Subset of NAC Image M112162602L showing landslides (bottom) covering impact melt on the floor (top) of a fresh Copernican-age crater at the edge of Oceanus Procellarum and west of Balboa crater. Image width is 550 m [NASA/GSFC/Arizona...

Published on 21 Dec 2009

Impact Melt Flows on Giordano Bruno

Frozen impact melt flows on the ejecta blanket of the young impact crater Giordano Bruno (22 km diameter). The image is about 600 m across and the flows are about 50-100 m wide (NASA/GSFC/Arizona State University).

Published on 15 Dec 2009

Milichius A

The inner rim of Milichius A crater in Mare Insularum. Image width is approximately 6 km wide [NASA/GSFC/Arizona State University].

Published on 18 Sep 2009

Necho Crater

Cracks form in the impact melt sheet on the floor of Necho Crater. Image width is 1.04 km [NASA/GSFC/Arizona State University].

Published on 21 Aug 2009

Terraced Wall in Bürg Crater

LROC NAC frame closeup of crater wall and terrace in Bürg crater (45.0°N, 28.2°E). The outer rim of the crater is along the right side of the frame. Image width is 1.62 km [NASA/GSFC/Arizona State University]

Published on 28 Jul 2009