Images Featured Sites Quickmap Videos Gigapan Exhibits Exciting New Images from The LROC Team. Total posts from Jeff Plescia 27 Search Up and Down / Back and Forth Compression and extension in Mare Tranquillitatis. A northeast-trending wrinkle ridge has overridden a northwest-trending graben. LROC NAC image M192774961L [NASA/GSFC/Arizona State University]. Published on 03 Jan 2013 Giant Flow of Impact Melt This giant flow of impact melt extends northward from a much larger mass of impact melt on the northern rim of the Tycho impact crater. This one section of the flow is more than 10 km long. LROC NAC M185954551R [NASA/GSFC/Arizona State University]. Published on 14 Aug 2012 Bulls-Eye Crater or Volcanic Vent? A circular depression (700 m diameter) sits atop of a circular mound 3.7 km in diameter. It is either a perfectly placed impact crater on the hill's summit, or a volcanic vent. LROC NAC M181173832LR [NASA/GSFC/Arizona State University]. Published on 25 Jul 2012 Watch That First Step! LROC oblique view of the giant scarp (cliff) Rupes Cauchy that cuts across 200 km of Mare Tranquillitatis. The scarp is 300 meters tall and Cauchy B crater is 6 km in diameter [NASA/GSFC/Arizona State University]. Published on 24 Jul 2012 River of Rock A small section of an enormous, now frozen, river of impact melt that flowed down the southeastern flank of Tycho crater some 108 million years ago. NAC image M185940195RE [NASA/GSFC/Arizona State University]. Published on 20 Jun 2012 Mare Crisium: Failure then Success Luna 24 landed on the northwestern rim of a 64 m diameter impact crater, on the volcanic plains of Mare Crisium. Enlargement of lander at lower left, NAC M174868307L [NASA/GSFC/Arizona State University]. Published on 16 Mar 2012 Lunokhod 1 Revisited Lunokhod 1 rover in its final parking place (38.315°N, 324.992°E) on the surface of Mare Imbrium. The inset in the lower left shows an expanded view of the rover. LROC NAC image M175502049RE. [NASA/GSFC/Arizona State University]. Published on 14 Mar 2012 Erosional trough on crater wall Erosional trough (400 m long x 100-200 m wide) on the eastern inner wall of the farside crater Moore F. Morphologically it resembles a martian sapping feature, suggested to form due to erosion by water flowing out of the subsurface. LROC NAC image M128075293R, image width is 500 m, Sun is coming from the lower right. [NASA/GSFC/Arizona State University]. Published on 24 Nov 2010 Luna 21 Lander Luna 21 lander delivered the Lunokhod 2 rover to the floor of Le Monnier crater in January 1973, LROC NAC Image M122007650LE [NASA/GSFC/ Arizona State University]. Published on 19 Mar 2010 Wrinkle ridges of northwest Mare Imbrium. A northeast-trending wrinkle ridge cuts across the plains of Mare Imbrium. The overall ridge is about 4.5 km wide. The contact between the ridge (right) and the surrounding mare basalt plains (left) runs diagonally up the image (NASA/GSFC/Arizona State University). Published on 14 Dec 2009 Prev 1 2 3 Next ← Previous Next → Displaying Post 11 - 20 of 27 in total