Results 211 to 220 of about 14,704 (241)
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The Evolution of the Lunar Regolith
Annual Review of Earth and Planetary Sciences, 1977layer (regolith) was known long before the first soft landings, though its properties were not clearly understood. Nearly all our present knowledge derives from samples returned from the Moon, and secondarily from observations made on the surface or from lunar orbit.
Yves Langevin, James R. Arnold
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Lunar Regolith Particles In Outposts [PDF]
AIAA SPACE 2009 Conference & Exposition, 2009 The US, India, China, Japan, and Europe plan for future crewed lunar missions. While mission architecture may be superficially similar to the American Apollo program of the 1960s and 1970s, future missions will vary considerably from that precedent in duration and complexity.
Constance M. Adams +2 more
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Evaluations of lunar regolith simulants
Planetary and Space Science, 2016Apollo lunar regolith samples are not available in quantity for engineering studies with In-Situ Resource Utilization (ISRU). Therefore, with expectation of a return to the Moon, dozens of regolith (soil) simulants have been developed, to some extent a result of inefficient distribution of NASA-sanctioned simulants.
Taylor, Lawrence A. +2 more
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The porosity of the upper lunar regolith
Icarus, 2016Abstract The porosity of the upper centimeter or so of the lunar regolith strongly affects several properties that are commonly studied remotely. Hence, it is important to determine its value. We have reanalyzed the data of Ohtake et al. (Ohtake et al. [2010]. Space Sci.
Bruce Hapke, H. Sato
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1990
Abstract The lunar regolith consists of the fragmental unconsolidated mantle which overlies more consolidated or crystalline rocks at the surface of the moon. The thickness of the regolith ranges from a few meters in some areas overlying mare basalt flows to tens of meters over much of the highland terrain.
David S. McKay, D.W. Ming
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Abstract The lunar regolith consists of the fragmental unconsolidated mantle which overlies more consolidated or crystalline rocks at the surface of the moon. The thickness of the regolith ranges from a few meters in some areas overlying mare basalt flows to tens of meters over much of the highland terrain.
David S. McKay, D.W. Ming
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The extent of lunar regolith mixing
Earth and Planetary Science Letters, 1979The activity of solar cosmic-ray-produced Mn-53 measured as a function of depth in the upper 100 g/sq cm of lunar cores 60009-60010 and 12025-12028 is discussed. Analyses of samples from the Apollo 15 and 16 drill stems together with authors' previously published results (1974, 1976), and the Battelle Na-22 and Al-26 data, indicate that in three of the
Mineo Imamura +5 more
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Properties and Mechanics of the Lunar Regolith
Applied Mechanics Reviews, 1993Knowledge of the lunar regolith is essential to success in lunar missions whether crewed or robotic. The regolith is the loose material overlying more intact strata on the Moon. It varies in thickness from several meters on the maria or lunar seas to many meters on the highlands of the Moon.
Koon Meng Chua, Stewart W. Johnson
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Investigation into Uses for Lunar Regolith
AIP Conference Proceedings, 2003Any sustained effort on the Moon will require use of in‐situ resources as much as possible to reduce costs. Power generation is a primary concern and solar cells would be a convenient source of power for any lunar activity. Lunar regolith is an easily accessible in‐situ resource.
Lance Williams +5 more
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Water Formation in the Lunar Regolith
Cosmic Research, 2019This study shows that oxygen atoms can be released from a crystal lattice of silicon dioxide in the lunar regolith as parts of silver hydroxide molecules. In turn, silver hydroxide can relatively easily react with hydrogen to generate water and silver. This means that the formation of water molecules involved in near-surface lunar soil is possible. The
S. I. Popel +3 more
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The chemistry of carbon in the lunar regolith
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1977The current status of knowledge concerning the chemistry of carbon in the lunar regolith is discussed. The respective roles of the solar wind and micrometeorite impact in contributing carbon and providing energy to stimulate chemical reactions and mobilize carbon phases are examined.
Geoffrey Eglinton, Colin T. Pillinger
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