Featured Images

Crater in 3D!

Digital Terrain Model (DTM) of an unnamed crater in the farside highlands. Image is 3.2 km across [NASA/GSFC/Arizona State University].

Published on 02 May 2012

Smooth Ejecta

Grooved surface created in an instant by an impact event. The linear pattern is radially symmetric around the parent crater; the parent crater must be very young as very few craters dot the ejecta blanket! LROC NAC M171788458RE, image...

Published on 10 Apr 2012

Splish Splash

An impact melt veneer coating a large boulder, ~80 m wide by 120 m long - larger than a football field! Downslope to the right, NAC M169630027R, image width is 530 m [NASA/GSFC/Arizona State University].

Published on 30 Mar 2012

Ejecta Starburst

High-reflectance ejecta created a starburst pattern originating from an unnamed ~270 m diameter crater. NAC M159059694R, image width 855 m [NASA/GSFC/Arizona State University].

Published on 28 Mar 2012

Impact Melt Boundary

Dry debris flows terminate on the cracked and bouldery melt sheet in Moltke. A textural change marks the boundary between crater wall and impact melt deposits embaying the crater floor. Image width is 1100 m, LROC NAC M122591558L...

Published on 24 Feb 2012

On the Floor of Thales

Contact between channelized impact melt (upper left) and fractured melt (lower right) on the floor of Thales crater. Crater floor is at lower right, LROC NAC image M170218508L, image width is 700 m [NASA/GSFC/Arizona State University].

Published on 31 Jan 2012

Ejecta blanket geology

Unconsolidated material and impact melt (smoother areas) in the continuous ejecta blanket of Stevinus A crater. Image is located to the northeast of Stevinus A, image width is 530 m, LROC NAC M170227051L [NASA/GSFC/Arizona State...

Published on 08 Dec 2011

Posidonius Y

A boulder perched on the rim of a Copernican crater in Mare Serenitatis. NAC frame number M168041107L, image width is 250 meters [NASA/GSFC/Arizona State University].

Published on 25 Oct 2011

Farside impact!

A young, fresh impact into the farside highlands, south of Tsiolkovskiy crater. LROC NAC M159073200L, image width ~785 m [NASA/GSFC/Arizona State University].

Published on 29 Sep 2011

Follow the highlands-mare boundary in Tsiolkovskiy!

Northeastern portion of Tsiolkovskiy crater, highlighting the boundary between mare and the highlands. Asterisk notes location of NAC inset; LROC WAC monochrome mosaic, 100 m/pixel [NASA/GSFC/Arizona State University].

Published on 28 Sep 2011

Outside of Giordano Bruno

Ejecta flows outside of Giordano Bruno crater. Sun direction is from right to left. Image number M161646501R, incidence angle 71°, image scale 0.55 m/pixels [NASA/GSFC/Arizona State University].

Published on 25 Aug 2011

Dichotomy

Dark material on the wall of a Copernican crater. The center of the crater is to the lower left. Image number M135847041R, incidence angle 53°, image scale 0.53 m/pixel [NASA/GSFC/Arizona State University].

Published on 24 Aug 2011

Ray of boulders

Dozens of boulders, ranging from 10 m to more than 30 m in diameter, are distributed within an ejecta ray close to the crater rim (lower right). These boulders represent the deepest material excavated during crater formation. LROC NAC...

Published on 18 Aug 2011

Recent Impact in Oceanus Procellarum

A small amount of impact melt pooled and froze on the floor of this Copernican impact crater, and is 90 x 70 m in size. What process creates impact melt pools? LROC NAC M111972680LE, image width is 750 m [NASA/GSFC/Arizona State...

Published on 12 Aug 2011

Splash and flow

Impact melt flowed across the primary ejecta of an unnamed Copernican-aged impact crater (46.75°N, 49.81°E). LROC NAC M159631206L,R; source crater toward the bottom [NASA/GSFC/Arizona State University].

Published on 14 Jul 2011

Impact melt in Anaxagoras crater

Boulders clustered on a positive relief bulge in an impact melt deposit on the floor of Anaxagoras crater (73.5°N, 349.7°E); most of the boulders are 10 - 30 m across. LROC NAC M155309869R, image width is 910 m [NASA/GSFC/Arizona State...

Published on 31 May 2011

Scouring secondary ejecta

Ejecta scours deep grooves into the walls and rim of an unnamed crater, located northwest of Henry Frères crater. Image width is 600 m, illumination is from the left, LROC NAC M148563335L [NASA/GSFC/Arizona State University].

Published on 23 Mar 2011

Stratified Ejecta Blocks

A stratified ejecta block around an unnamed fresh crater on the far side of the Moon, NAC frame M110757216R (127.61°E, 13.13°N). Incidence angle is 24°, scale is 0.58 m/px [NASA/GSFC/Arizona State University].

Published on 01 Feb 2011

Ejecta in Tycho crater

320 m block of ejecta in Tycho crater covered by a veneer of impact melt. Image width is 370 m, LROC NAC 142334392RE [NASA/GFSC/Arizona State University].

Published on 08 Dec 2010

Kepler Crater Ejecta

Large boulder ejected from Kepler crater, a small depression from the boulder's impact is just visible. LROC NAC M140155410L, image width is 800 m [NASA/GFSC/Arizona State University].

Published on 09 Nov 2010