Results 81 to 90 of about 15,669 (223)

Martian Cratering 4: Mariner 9 Initial Analysis of Cratering Chronology [PDF]

open access: yes, 1973
Early analyses of cratering and other Martian surface properties that indicated extensive ancient erosion have been strongly supported by Mariner 9 data.
Hartmann, W. K.
core   +1 more source

Lunar impact craters [PDF]

open access: yes
Topography and evolution of lunar craters - meteoritic impact ...
Lowman, P. D., Jr.
core   +1 more source

Catalogue of lunar craters cross sections. I - Craters with peaks Research report no. 16 [PDF]

open access: yes
Lunar craters with centrally located peaks - tables and profile ...
Hawkins, G. S.   +2 more
core   +1 more source

Communications of the lunar planetary laboratory, volume 3, no. 40- the system of lunar craters, quadrant ii [PDF]

open access: yes
Observable properties of craters in second lunar ...
Agnieray, A. P.   +4 more
core   +1 more source

Delivery of Dark Material to Vesta via Carbonaceous Chondritic Impacts

open access: yes, 2012
NASA's Dawn spacecraft observations of asteroid (4) Vesta reveal a surface with the highest albedo and color variation of any asteroid we have observed so far. Terrains rich in low albedo dark material (DM) have been identified using Dawn Framing Camera (
Adams   +71 more
core   +1 more source

Quantitative Research on the Morphological Characteristics of Lunar Impact Craters of Different Stratigraphic Ages since the Imbrian Period

open access: yesRemote Sensing
Impact craters serve as recorders of lunar evolutionary history, and determining the stratigraphic ages of craters is crucial. However, the age of many craters on the Moon remains undetermined.
Ke Zhang   +8 more
doaj   +1 more source

Quarterly report of the Haystack Observatory, 1 January - 31 March 1971 [PDF]

open access: yes
Radar astronomy observations on quasars, lunar craters, and Venus ...

core   +1 more source

Space Math: Lunar Math [PDF]

open access: yes, 2008
This booklet includes 17 problems relating to the Moon and its exploration. Images from NASA are analyzed to determine image scales and the physical sizes of various crates and features.
Sten Odenwald
core  

Olivine or Impact Melt: Nature of the "Orange" Material on Vesta from Dawn

open access: yes, 2013
NASA's Dawn mission observed a great variety of colored terrains on asteroid (4) Vesta during its survey with the Framing Camera (FC). Here we present a detailed study of the orange material on Vesta, which was first observed in color ratio images ...
Ammanito, E.   +22 more
core   +1 more source

Statistical models of lunar rocks and regolith [PDF]

open access: yes
The mathematical, statistical, and computational approaches used in the investigation of the interrelationship of lunar fragmental material, regolith, lunar rocks, and lunar craters are described. The first two phases of the work explored the sensitivity
Marcus, A. H.
core   +1 more source

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