Results 61 to 70 of about 838 (187)

Nanoscale space weathering features in mature lunar soil revealed by TEM and APT

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 2048-2072, August 2026.
Abstract Space weathering significantly alters the optical, chemical, and structural properties of lunar regolith at micro‐ and nanoscales; yet detailed nanoscale variability within individual soils remains underexplored. Here we apply transmission electron microscopy (TEM) and atom probe tomography to four mineral grains (olivine, ilmenite, and two ...
Jennika Greer, Alexander M. Kling, Luke Daly, Dieter Isheim, David N. Seidman, Michelle S. Thompson, Philipp R. Heck   +6 more
wiley   +1 more source

A New Detailed Global Map of Lunar Light Plains

The Planetary Science Journal
Lunar light plains (LPs) are globally distributed, smooth and flat geologic units occurring in crater floors and topographic lows, similar in morphology to mare basalts, but with moderate to high albedo.
Barbara Giuri, Carolyn H. van der Bogert, Harald Hiesinger, Nico Schmedemann   +3 more
doaj   +1 more source

Impact provenance and age of a unique basalt found in Apollo 12 regolith

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 2073-2085, August 2026.
Abstract Basaltic sample 12032,366‐18 from the Apollo 12 landing site is distinct among basalts collected at this site, other Apollo landing sites, and lunar meteorites in terms of its age, bulk rock composition, and isotopic composition. We present new Pb isotopic data obtained by in situ Secondary Ion Mass Spectrometry on multiple mineral phases in ...
C. Deligny, M. J. Whitehouse, R. E. Merle, H. Jeon, A. A. Nemchin, B. L. Jolliff   +5 more
wiley   +1 more source

Global Lunar Crater Density Using Buffered Nonsparseness Correction

The Planetary Science Journal
The density of craters on a planetary surface directly relates to the age of the surface. As the surface ages, however, craters can be erased by subsequent large impacts via direct overprinting, known as geometric crater obliteration.
Ya Huei Huang, Christian Riedel, Jason M. Soderblom, Stephanie Brown Krein, Csilla Orgel, Jack W. Conrad, Masatoshi Hirabayashi, David A. Minton   +7 more
doaj   +1 more source

Degenerate optimization problems of economy and power engineering

Nuclear Energy and Technology, 2015
Optimization of large economy and power engineering systems leads to degenerate solutions of a high dimensionality. This is a very strong mathematical complication.
A.V. Klimenko
doaj   +1 more source

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

Remote 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, Jianzhong Liu, Li Zhang, Yaya Gu, Zongyu Yue, Sheng Zhang, Jingyi Zhang, Huibin Qin, Jingwen Liu   +8 more
doaj   +1 more source

Effect of impactor oblateness on the formation of lunar simple craters

Astronomy & Astrophysics
Context. Simple craters are ubiquitous on the Moon and are mainly formed by impactors of
Wang Yichen, Xiao Zhiyong, Xu Rui, Wünnemann Kai, Li Jian-Yang   +4 more
doaj   +1 more source

Evaluating Lunar Crater Ejecta Maturation across Wavelengths

The Planetary Science Journal
Ejecta blankets of young lunar craters provide an important window into the maturation processes of material at the lunar surface. As freshly exposed material degrades, the signature of that material changes in remote sensing data.
Angela M. Stickle, Anna C. Martin, Robyn M. Meier, Tyler M. Powell   +3 more
doaj   +1 more source

Automated detection of craters on the lunar surface using deep learning: A review with insights from Chandrayaan-2 TMC-2 data

Results in Earth Sciences
The Moon’s surface, marked by craters, serves as a crucial record of the Solar System's impact history, offering key insights into planetary formation and evolution.
Mimansa Sinha, Sanchita Paul
doaj   +1 more source

LROC-derived 1 m Resolution Digital Elevation Model and Regolith Temperature Simulation of Banting Crater

The Astronomical Journal
The regolith temperature of the Moon is strongly influenced by direct solar radiation and multiple-scattered thermal radiation from the surrounding terrains.
Zhen Yang, Zhen Zhong, Huaiyu He, Jianguo Yan, Lidan Zhang   +4 more
doaj   +1 more source