Results 51 to 60 of about 305 (168)

Mineral Weathering Experiments for Terrestrial Planetary Analogs in a Continuous‐Flow Reactor

Geofluids, Volume 2026, Issue 1, 2026.
Understanding the groundwater environments for ancient Mars and other terrestrial bodies is of great interest for evaluating their habitability. Here, we experimentally tested simulated aqueous alterations of two Mars simulants (variants of MGS‐1) using a continuous‐flow packed bed reactor, reacting with three ionic simulated groundwater analog ...
Jessica M. Weber, Eduardo Martinez, Rachel Y. Sheppard, Laura E. Rodriguez, Aaron Celestian, Bronwyn L. Teece, Laura M. Barge, Pramita Mishra   +7 more
wiley   +1 more source

Oxychlorine Species on Mars: A Review

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract Oxychlorine species (mainly perchlorate and chlorate) have been identified at multiple locations on the surface of Mars by both orbiter and in situ rovers. They have also been found in martian meteorites. Cl‐isotopes in meteoritic minerals suggest that an oxychlorine cycle has been operating on the martian surface for the last ∼4 billion years.
Kaushik Mitra
wiley   +1 more source

The Influence of Space Weathering on the Far‐Ultraviolet Reflectance of Apollo‐Era Soils

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract Building on our previous studies of the far‐ultraviolet (FUV) reflectance of Apollo soil 10084 and lunar soil simulants JSC‐1A and LMS‐1 (Gimar et al., 2022, https://doi.org/10.1029/2022je007508; Raut et al., 2018, https://doi.org/10.1029/2018je005567), we present new FUV results for Apollo soils 68501 and 71061. Heavily weathered soils (68501,
C. J. Gimar, U. Raut, A. Stevanovic, L. C. Mayorga, S. Protopapa, B. D. Byron, K. D. Retherford, T. K. Greathouse, M. J. Poston, J. T. S. Cahill, D. N. Qasim   +10 more
wiley   +1 more source

A Comprehensive Review of Additive Manufacturing for Space Applications: Materials, Advances, Challenges, and Future Directions

Advanced Engineering Materials, Volume 27, Issue 22, November 2025.
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos, Eleni Papadopoulou, Grigorios Kostopoulos, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria Gkara, Chara C. Mitropoulou, Nikos D. Lagaros   +8 more
wiley   +1 more source

Discrete element simulation of lunar regolith considering van der Waals forces and its application in cone penetration test

Yantu gongcheng xuebao
Lunar regolith serves as a critical material for lunar surface construction and resource exploration missions, and its mechanical response characteristics are essential for lunar engineering applications.
SANLANG Siji 1, 2, 3, WANG Chao 1, 2, 3, TONG Xiaohua 1, 2, 3, XIE Huan 1, 2, 3, XU Kaihan 4, LI Jia 1, 2, 3, JIANG Mingjing 5, XU Xiong 1, 2, 3, FENG Yongjiu 1, 2, 3, JIN Yanmin 1, 2, 3
doaj   +1 more source

Robotic Arm Geomechanical Experiments and Analyses to Enable Lunar Science and Settlement

Earth and Space Science, Volume 12, Issue 11, November 2025.
Abstract This study evaluates the capability of a robotic arm equipped with a force‐torque sensor and a specially designed scoop to perform geomechanical characterization of high‐fidelity lunar highlands regolith simulant. Experiments focused on pressure‐sinkage, shear strength, and angle of repose to assess the performance and applicability of the ...
J. M. Long‐Fox, R. P. Mueller, E. A. Bell, M. A. Gudino, E. J. Bidot Lopez, T. Lipscomb, R. L. McCormick, E. Marteau, S. J. Moreland, D. T. Britt   +9 more
wiley   +1 more source

Effects of wheel width on running performance of four-wheeled small lunar rover

Nihon Kikai Gakkai ronbunshu
As future lunar habitation plans progress, the importance of landing-based exploration is increasing. Small lunar rovers are considered effective for such missions due to their low deployment risk and cost. However, these rovers are prone to slippage and
Kimitaka WATANABE, Moegi MARU, Masataka KAWAGUCHI, Kazuto TANAKA   +3 more
doaj   +1 more source

A Study Demonstrating That Using Gravitational Offset to Prepare Extraterrestrial Mobility Missions Is Misleading

Journal of Field Robotics, Volume 42, Issue 7, Page 3772-3794, October 2025.
ABSTRACT Recently, there has been a surge of international interest in extraterrestrial exploration targeting the Moon, Mars, the moons of Mars, and various asteroids. This contribution discusses how current state‐of‐the‐art Earth‐based testing for designing rovers and landers for these missions currently leads to overly optimistic conclusions about ...
Wei Hu, Pei Li, Arno Rogg, Alexander Schepelmann, Samuel Chandler, Ken Kamrin, Dan Negrut   +6 more
wiley   +1 more source

Analysis of four Apollo 16 double drive tubes using QEMSCAN® mapping techniques: Implications for sampling the lunar regolith in highland terrains

Meteoritics &Planetary Science, Volume 60, Issue 10, Page 2504-2523, October 2025.
Abstract The lunar regolith contains a rich history of Solar System impact events and solar activity. Many future missions will land in the south polar region of the Moon, a heavily impact cratered highland terrain, similar to the Apollo 16 landing site.
Stephanie L. Halwa, Katherine H. Joy, Romain Tartèse, Samantha K. Bell   +3 more
wiley   +1 more source

Simplified Particle Models and Properties Analysis Designed for DEM Lunar Soil Simulants

Aerospace
The discrete element method (DEM) is one of the most popular methods for simulating lunar soil simulants due to the lack of real lunar soil. To reduce the computational consumption and difficulty because of complex particle models, simplified particle ...
Junhao Liu, Qian Li, Xiuli Xiong, Lanlan Xie   +3 more
doaj   +1 more source