Results 21 to 30 of about 37,609 (228)

Assessing Toxicity and Nuclear and Mitochondrial DNA Damage Caused by Exposure of Mammalian Cells to Lunar Regolith Simulants

GeoHealth, 2018
Previous missions to the lunar surface implicated potential dangers of lunar soil. In future explorations, astronauts may spend weeks or months on the Moon, increasing the risk of inhaling lunar dust.
Rachel Caston, Katie Luc, Donald Hendrix, Joel A. Hurowitz, Bruce Demple   +4 more
doaj   +1 more source

Mapping of the lunar surface by average atomic number based on positron annihilation radiation from Chang’e-1

Earth and Planetary Physics, 2018
A map of the average atomic number of lunar rock and soil can be used to differentiate lithology and soil type on the lunar surface. This paper establishes a linear relationship between the average atomic number of lunar rock or soil and the flux of ...
LiangQuan Ge, JianKun Zhao, QingXian Zhang, YaoYao Luo, Yi Gu   +4 more
doaj   +1 more source

Laser melting manufacturing of large elements of lunar regolith simulant for paving on the Moon

Scientific Reports, 2023
The next steps for the expansion of the human presence in the solar system will be taken on the Moon. However, due to the low lunar gravity, the suspended dust generated when lunar rovers move across the lunar soil is a significant risk for lunar ...
Juan-Carlos Ginés-Palomares, Miranda Fateri, Eckehard Kalhöfer, Tim Schubert, Lena Meyer, Nico Kolsch, Monika Brandić Lipińska, Robert Davenport, Barbara Imhof, René Waclavicek, Matthias Sperl, Advenit Makaya, Jens Günster   +12 more
doaj   +1 more source

Simulation of Drilling Temperature Rise in Frozen Soil of Lunar Polar Region Based on Discrete Element Theory

Aerospace, 2023
As the frozen soil in the South Pole region of the Moon is an important water resource, the operation of drilling and retrieving samples of the frozen soil in this region will be a crucial task for us to accomplish in future deep-space exploration. Thus,
Jinsheng Cui, Le Kui, Weiwei Zhang, Deming Zhao, Jiaqing Chang   +4 more
doaj   +1 more source

Plants grown in Apollo lunar regolith present stress-associated transcriptomes that inform prospects for lunar exploration

Communications Biology, 2022
Arabidopsis plants were seeded onto lunar soil samples taken directly from the Apollo 11, 12, and 17 missions. Transcriptomic analyses reveal that plants grown in lunar soil differentially express genes associated with salt, metal, and ROS stress.
Anna-Lisa Paul, Stephen M. Elardo, Robert Ferl   +2 more
doaj   +1 more source

Proof of Principle of the Lunar Soil Volatile Measuring Instrument on Chang’ e-7: In Situ N Isotopic Analysis of Lunar Soil

Aerospace
The nitrogen isotopic compositions of lunar soil have important implications for the sources of lunar volatiles and even the evolution of the moon.
Ye He, Huaiyu He, Ziheng Liu, Fei Su, Jiannan Li, Yanan Zhang, Rongji Li, Xinyu Huang, Xuhang Zhang, Chao Lu, Shengyuan Jiang, Junyue Tang, Ranran Liu   +12 more
doaj   +1 more source

Temperature Prediction of Icy Lunar Soil Sampling Based on the Discrete Element Method

Aerospace
This study is part of the preliminary research for the Chang’e 7 project in China. The Chang’e 7 project plans to drill to penetrate the lunar polar soil and collect lunar soil samples using a spiral groove structure.
Deming Zhao, Tianyi Peng, Weiwei Zhang, He Wang, Jinsheng Cui   +4 more
doaj   +1 more source

An Empirical Model to Estimate Abundance of Nanophase Metallic Iron (npFe⁰) in Lunar Soils

Remote Sensing, 2020
Lunar soils gradually become mature when they are exposed to a space environment, and nanophase metallic iron (npFe0) generates within them. npFe0 significantly changes the optical properties of lunar soils and affects the interpretation of the remotely ...
Dawei Liu, Yuanzhi Zhang, Guangliang Zhang, Bin Liu, Xin Ren, Rui Xu, Chunlai Li   +6 more
doaj   +1 more source

In Situ Methanation on Mars: A Process Concept Study on the Impact of H2/CO2 and Recycle Ratio

Chemie Ingenieur Technik, EarlyView.
The rocket propellant methane can be produced on Mars by in situ resource utilization. The H2/CO2 ratio is decisive, and excess H2 is favored for providing sufficient propellant purity. The operation mode—with or without recycling of unreacted reactants—depends on the resource availability of the selected landing site. Abstract For return missions from
Franz Braun, Thomas‐Oliver Nagel, Samuel Prinz, Jens Friedland, Robert Güttel   +4 more
wiley   +1 more source

Simulated Lunar Soil: Can It Be Organically Modified through Compost Cultivation?

Soil Systems
This study aimed to explore the possibility of improving the fertility of lunar soil through the reuse of resources by composting household waste and collecting composting fermentation broth.
Zhixuan Gong, Jia Wen, Yichen Zhou, Yunbo Zhai, Jinghao Xu   +4 more
doaj   +1 more source