Results 1 to 10 of about 109,159 (287)
Detection of the Lunar Surface Soil Permittivity with Megahertz Electromagnetic Wave [PDF]
Sensors, 2021 In this paper, the detection of the lunar surface soil permittivity with megahertz electromagnetic (EM) waves by spaceborne radar is studied based on the EM scattering theory, the Boltzmann–Shukla equations, and the improved scattering matrix method ...
Qingwen Rao, Guanjun Xu, Wangchen Mao
doaj +2 more sources
The Lunar Surface Gravimeter as a Lunar Seismograph [PDF]
, 2008 Introduction: The primary objective for the Lunar Surface Gravimeter (LSG) on Apollo 17 was to search for gravitational waves, but it failed in detecting them [1]. When the instrument was deployed on the Moon, the sensor beam could not be balanced in the proper equilibrium position. Consequently, the LSG was not able to function as originally designed.
Kawamura, T. +5 more
openaire +2 more sources
Recent progress in lunar dust migration and biological toxicity research
地球与行星物理论评, 2021 Lunar dust is easy to transport both vertically and horizontally, which affects the lunar surface material distribution, and the dusty plasma environment near the lunar surface.
Xiaoping Zhang +4 more
doaj +1 more source
Nature, 1960 MR. FIRSOFF'S clarification of ‘lunavoes’ is very helpful, and I must apologize for having confused his explanation of rays with Spurr's explanation of radial gullies. My argument against the presence of water applies equally to ice and snow, which would be dissociated by solar ultra-violet radiation in the vapour phase.
openaire +3 more sources
Global Hall MHD Simulations of the Solar Wind Implantation Flux on the Lunar Surface
The Planetary Science Journal, 2023 The solar wind can directly interact with the lunar surface and provide an important source for surface space weathering and water generation. Here we study the solar wind implantation flux on the lunar surface with global Hall MHD simulations.
Lianghai Xie +8 more
doaj +1 more source
Reachable set analysis of practical trans-lunar orbit via a retrograde semi-analytic model
Earth, Planets and Space, 2023 Different from the Apollo flight mode, a safer trans-lunar flight mode for the crews is preferred. The previous-arrived lunar module rendezvouses with the crew exploration vehicle at a low lunar destination orbit, and then the crews ride the lunar module
Bo-yong He, Sheng-gang Wu, Heng-nian Li
doaj +1 more source
The Influence of Heterogeneity on Lunar Irradiance Based on Multiscale Analysis
Remote Sensing, 2019 The Moon is a stable light source for the radiometric calibration of satellite sensors. It acts as a diffuse panel that reflects sunlight in all directions, however, the lunar surface is heterogeneous due to its topography and different mineral content ...
Xiangzhao Zeng, Chuanrong Li
doaj +1 more source
New Lunar Crater Production Function Based on High-Resolution Images
Remote Sensing, 2023 The lunar crater production function describes the general pattern of the size–frequency distribution of craters on the lunar surface, and it is the foundation of the surface dating method via crater counting.
Jianan Liu +4 more
doaj +1 more source
Learning-Based End-to-End Path Planning for Lunar Rovers with Safety Constraints
Sensors, 2021 Path planning is an essential technology for lunar rover to achieve safe and efficient autonomous exploration mission, this paper proposes a learning-based end-to-end path planning algorithm for lunar rovers with safety constraints.
Xiaoqiang Yu, Ping Wang, Zexu Zhang
doaj +1 more source
Lunar surface mechanical properties [PDF]
Journal of Geophysical Research, 1968 The surface material at the Surveyor 5 site is granular and slightly cohesive. Spacecraft footpads plowed trenches in this material as the spacecraft slid during landing. For a compressible soil model, a static bearing capacity of 2.7 newtons/cm^2 gave best agreement with the observations.
Christensen, E. M. +11 more
openaire +3 more sources