Results 81 to 90 of about 36,668 (189)

NH4‐Smectites as Potential Precursors of Nitrogen Compounds Evolved During Analyses by the Sample Analysis at Mars (SAM) Instrument on the Curiosity Rover

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Ammonium (NH4+) in the interlayer space of phyllosilicates has been proposed as a potential but underexplored nitrogen reservoir on Mars. We synthesized ammonium‐exchanged smectites (montmorillonite SWy‐2 and nontronite NAu‐2) and analyzed them, both as pure phases and in mixtures containing five or 20 wt.% magnesium (Mg) perchlorate, under ...
S. Andrejkovičová, A. C. McAdam, J. C. Stern, M. Millan, R. Navarro‐González, C. A. Knudson, S. T. Wieman, E. B. Rampe, D. W. Ming, C. N. Achilles, S. S. Johnson, F. Rocha, C. A. Malespin, P. R. Mahaffy   +13 more
wiley   +1 more source

Rapid Response of Martian Magnetotail to Solar Wind Disturbance: Tianwen‐1 and MAVEN Joint Observations

Geophysical Research Letters
The Martian magnetotail is largely controlled by the solar wind (SW) and is modulated by variations in the upstream drivers. However, due to the limitations of single‐spacecraft observations, the effects of SW variations on the Martian magnetotail have ...
Z. Z. Guo, H. S. Fu, J. B. Cao, Y. M. Wang, M. Ge, T. Y. Zhou, W. D. Fu, Z. Wang   +7 more
doaj   +1 more source

Radar Observations of Liquid Water in the South Polar Region of Mars: Indications from Astrobiology Perspectives

Universe
In recent decades, extensive research has led to the understanding that Mars once hosted substantial liquid-water reserves. While the current Martian landscape boasts significant water-ice deposits at its North and South poles, the elusive presence of ...
Junyi Zhou, Chunyu Ding, Siting Xiong, Yan Su, Jiawei Li, Mengna Chen, Shun Dai   +6 more
doaj   +1 more source

Improving the Accuracy of the Martian Ephemeris Short-Term Prediction

Advances in Astronomy, 2018
The Chinese Mars exploration mission is planned to be launched in 2020, which includes an orbiter, a lander, and a rover. High precision Martian ephemeris is very important in Mars exploration, especially for the Martian orbit insertion and the Martian ...
Quan Shan, Peijia Li, Yong Huang, Min Fan, Haitao Li, Xiaogong Hu   +5 more
doaj   +1 more source

Mesoscale Modeling of Titan’s Shangri‐La Region: The Impact of Surface Properties on Winds

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The knowledge of Titan’s near‐surface atmosphere is sparse. The Huygens descent probe measured winds, and the multiple dune field observations and possible dust storms suggest active near‐surface dynamics. The Dragonfly rotorcraft lander will fly close to the surface in the Shangri‐La region, near the Huygens landing site, where complex dune ...
Maxence Lefèvre, Léa E. Bonnefoy, Aymeric Spiga, Bruno de Batz de Trenquelléon, Sébastien Lebonnois, Alexander G. Hayes   +5 more
wiley   +1 more source

Evidence for silicate dissolution on Mars from the Nakhla meteorite [PDF]

, 2013
Veins containing carbonates, hydrous silicates and sulphates that occur within and between grains of augite and olivine in the Nakhla meteorite are good evidence for the former presence of liquid water in the Martian crust.
Smith, C.L., Tomkinson, T., Stuart, F. M., Lee, M.R., Stuart, F.M., Smith, C. L., Lee, M. R., Mark, D. F., Mark, D.F.   +8 more
core   +1 more source

Production of Martian fiber by in-situ resource utilization strategy

iScience
Summary: Many countries and commercial organizations have shown great interest in constructing a Martian base. In situ resource utilization (ISRU) provides a cost-effective way to achieve this ambitious goal.
Ze-Shi Guo, Dan Xing, Xiong-Yu Xi, Cun-Guang Liang, Bin Hao, Xiaojia Zeng, Hong Tang, Huaican Chen, Wen Yin, Peng Zhang, Kefa Zhou, Qingbin Zheng, Peng-Cheng Ma   +12 more
doaj   +1 more source

Automatic Crater Classification Using a Deep‐Learning‐Based Pipeline

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Identifying and classifying impact craters on Mars is crucial for understanding the planet's geological history and surface evolution. Traditional crater classification relies on manual annotation methods, which are often limited by human biases and the difficulty of interpreting geomorphological features.
L. Martinez, F. Andrieu, F. Schmidt, M. S. Bentley   +3 more
wiley   +1 more source

Fifty Years Later: Revisiting Viking 2 Seismic Signals Through InSight

AGU Advances, Volume 7, Issue 7, October 2026.
Abstract For nearly 50 years, the origin of the candidate seismic signals recorded by Viking 2 remained unresolved because of limited instrumental sensitivity, onboard observation, data compression, and the absence of Martian seismic context. Here we reconstruct the Viking seismic workflow and reinterpret the two Viking candidate events, recorded on ...
Wanbo Xiao, Jiaqi Li, Yanbin Wang, Andrew Lazarewicz   +3 more
wiley   +1 more source

Development of a mineralogically replicated Martian regolith simulant informed by Martian meteorites

Cleaner Materials
Martian regolith simulants play a critical role in scientific research, payload testing, and in situ resource utilization (ISRU) experiments. However, the absence of actual Martian soil samples limits the accuracy of current simulants in replicating the ...
Yutong Deng, Feng Li, Siqi Zhou, Xinyang Tao, Jiayuan Liu, Zhiqian Lin   +5 more
doaj   +1 more source