Results 51 to 60 of about 25,419 (252)

Evolution of Water Reservoirs on Mars: Constraints from Hydrogen Isotopes in Martian Meteorites [PDF]

open access: yes, 2014
Martian surface morphology implies that Mars was once warm enough to maintain persistent liquid water on its surface. While the high D/H ratios (~6 times the Earth's ocean water) of the current martian atmosphere suggest that significant water has been lost from the surface during martian history, the timing, processes, and the amount of the water loss
arxiv   +1 more source

Production of Martian fiber by in-situ resource utilization strategy [PDF]

open access: yesarXiv, 2023
Many countries and commercial organizations have shown great interest in constructing Martian base. In-situ resource utilization (ISRU) provides a cost-effective way to achieve this ambitious goal. In this paper, we proposed to use Martian soil simulant to produce fiber to satisfy material requirement for the construction of Martian base.
arxiv  

A new martian crater chronology: Implications for Jezero crater [PDF]

open access: yes, 2021
Crater chronologies are a fundamental tool to assess relative and absolute ages of planetary surfaces when direct radiometric dating is not available. Martian crater chronologies are derived from lunar crater spatial densities on terrains with known radiometric ages, and thus they critically depend on the extrapolation Moon to Mars.
arxiv   +1 more source

Observations of Locally Generated Whistler-mode Waves in the Martian Magnetotail Current Sheet

open access: yesThe Astrophysical Journal, 2023
The whistler-mode wave is an electromagnetic wave that commonly occurs in space plasma and has been extensively studied, especially within the Earth's magnetosphere. They have also been reported in the near-Mars space, such as Martian upstream solar wind,
Xiao Ma   +6 more
doaj   +1 more source

A Mars Environment Chamber Coupled with Multiple In Situ Spectral Sensors for Mars Exploration

open access: yesSensors, 2021
Laboratory simulation is the only feasible way to achieve Martian environmental conditions on Earth, establishing a key link between the laboratory and Mars exploration. The mineral phases of some Martian surface materials (especially hydrated minerals),
Zhongchen Wu   +7 more
doaj   +1 more source

Compliant Robotics in Space: A Prospective Review of Soft and Deformable Systems for Space Missions

open access: yesAdvanced Intelligent Systems, EarlyView.
Compliant robots are increasingly becoming integral to space exploration due to their adaptability, flexibility, and lightweight design. This article reviews categories such as soft, reconfigurable, and hyper‐redundant robots and their evolving role in enhancing space missions.
Hamed Rahimi Nohooji, Holger Voos
wiley   +1 more source

Reviewing Martian Atmospheric Noble Gas Measurements: From Martian Meteorites to Mars Missions

open access: yesGeosciences, 2020
Martian meteorites are the only samples from Mars available for extensive studies in laboratories on Earth. Among the various unresolved science questions, the question of the Martian atmospheric composition, distribution, and evolution over geological ...
Thomas Smith   +3 more
doaj   +1 more source

Effects of Charged Martian Dust on Martian Atmosphere Remote Sensing

open access: yesRemote Sensing, 2022
In this paper, the extinction property and optical depth of charged Martian dust at infrared band 3 THz–300 THz are studied using the Mie scattering theory.
Xuebang Gao   +3 more
doaj   +1 more source

Effect of Sintering Temperature on Microstructure and Mechanical Properties of Molded Martian and Lunar Regolith [PDF]

open access: yesarXiv, 2022
Cylindrical specimens of Martian and Lunar regolith simulants were molded using a salt water binder and sintered at various temperatures for comparing microstructure, mechanical properties and shrinkage. Material microstructure are reported using optical microscope and material testing is done using an MTS universal testing machine.
arxiv  

Temporal analysis of all high-resolution Mars imaging products [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
A meta-data analysis has been performed of high-resolution imagery that have been acquired over the last four decades from Mars. More specifically, we are interested in two independent image parameters, the time that each image was acquired and the ...
P. Sidiropoulos, J.-P. Muller
doaj   +1 more source

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