Results 41 to 50 of about 4,504,069 (226)

The Mars system revealed by the Martian Moons eXploration mission

Earth, Planets and Space, 2022
Japan Aerospace Exploration Agency (JAXA) plans a Phobos sample return mission (MMX: Martian Moons eXploration). In this study, we review the related works on the past climate of Mars, its evolution, and the present climate and weather to describe the ...
Kazunori Ogohara, Hiromu Nakagawa, Shohei Aoki, Toru Kouyama, Tomohiro Usui, Naoki Terada, Takeshi Imamura, Franck Montmessin, David Brain, Alain Doressoundiram, Thomas Gautier, Takuya Hara, Yuki Harada, Hitoshi Ikeda, Mizuho Koike, François Leblanc, Ramses Ramirez, Eric Sawyer, Kanako Seki, Aymeric Spiga, Ann Carine Vandaele, Shoichiro Yokota, Antonella Barucci, Shingo Kameda   +23 more
doaj   +1 more source

Pitted Terrain on Vesta and Implications for the Presence of Volatiles. [PDF]

, 2012
We investigated the origin of unusual pitted terrain on asteroid Vesta, revealed in images from the Dawn spacecraft. Pitted terrain is characterized by irregular rimless depressions found in and around several impact craters, with a distinct morphology
Reddy, V., Preusker, F., Tosi, F., Garry, W.B., Capria, M., Williams, D., Williams, D.A., Nathues, A., Denevi, B.W., Tosi, N., Le Corre, L., Sunshine, J.M., Raymond, C., Li, J.-Y., Buczkowski, D., Petro, N.E., O'Brien, D.P., Petro, N., Wyrick, D., McCord, T.B., Raymond, C.A., McCoy, T., De sanctis, M.C., Russell, C., Russell, C.T., Capaccioni, F., Pieters, C.M., Gaskell, R., Gaskell, R.W., Blewett, D.T., Buczkowski, D.L., Preusker, Frank, OBrien, D., Capria, M.T., Garry, W., Scully, J., Li, J., Denevi, B., Blewett, D., Pieters, C., Sunshine, J., Wyrick, D. Y., Marchi, S., Schenk, P., De Sanctis, M.   +44 more
core   +1 more source

Spontaneous Cyclic Levitation of Glycerol‐Water Droplets at Low Pressures

Advanced Science, EarlyView.
Under low pressure, a minute glycerol addition transforms the chaotic dynamics of freezing water droplets into cyclic levitation. Freeze‐concentration preserves liquid pathways that relax expansion‐induced stress, while freezing point depression weakens asymmetric vaporization recoil.
Chen Xu, Renjie Hua, Wei Ma, Fuqiang Chu, Dong Liang, Xueshi Li, Qirui Zhang, Yuan Dong, Xuehu Ma, Xiao Yan, Shuhuai Yao   +10 more
wiley   +1 more source

Computer modeling and experimental work on the astrobiological implications of the martian subsurface ionising radiation environment [PDF]

, 2008
Any microbial life extant in the top meters of the martian subsurface is likely to be held dormant for long periods of time by the current permafrost conditions.
Dartnell, Lewis R, Dartnell, L.R.
core  

Water Electrolysis Technologies for Extraterrestrial Water Resource Conversion

EcoEnergy, EarlyView.
This paper reviews four water electrolysis technologies for extraterrestrial water conversion: alkaline water electrolysis, proton exchange membrane water electrolysis, solid oxide water electrolysis, and anion exchange membrane water electrolysis. It elaborates on their mechanisms, components, and integration, highlighting challenges such as water ...
Yawen Jiang, Yuan Zhao, Lin Zu, Lili Ling, Yongwei Zhao, Jun Di, Pin Song   +6 more
wiley   +1 more source

Particle‐Scale Mechanics of a Regolith‐Type Soil

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT The existing studies have reported that the surface of Mars shows the presence of materials having igneous origin, including basalt and regolith‐type coarse soils. These findings are affected by significant uncertainties and, therefore, the selection of simulants for various exploration applications, including surface mobility of rovers ...
Vincenzo Nardelli, Chencheng Wang, Matthew Richard Coop   +2 more
wiley   +1 more source

High-Salinity Fluid Downslope Flow on Regolith Layer Examined by Laboratory Experiment: Implications for Recurring Slope Lineae on Martian Surfaces

Fluids
Numerous dark linear recurrent features called Recurring Slope Lineae (RSL) are observed on Martian surfaces, hypothesized as footprints of high-salinity liquid flow. This paper experimentally examined this “wet hypothesis” by analyzing the aspect ratios
Yoshiki Tabuchi, Arata Kioka, Takeshi Tsuji, Yasuhiro Yamada   +3 more
doaj   +1 more source

Space Environmental Chamber for Planetary Studies

Sensors, 2020
We describe a versatile simulation chamber that operates under representative space conditions (pressures from < 10−5 mbar to ambient and temperatures from 163 to 423 K), the SpaceQ chamber.
Abhilash Vakkada Ramachandran, Miracle Israel Nazarious, Thasshwin Mathanlal, María-Paz Zorzano, Javier Martín-Torres   +4 more
doaj   +1 more source

Interplanetary frontiers: terraforming from an invasion science perspective

Oikos, EarlyView.
The pursuit of a multi‐planetary existence represents one of humanity's greatest frontiers. If applied justly, it offers an opportunity to extend its civilization's lifespan amid escalating sustainability crises on Earth. One approach increasingly gaining traction is terraforming, a hitherto theoretical ecological and evolutionary experiment revolving ...
Teun Everts, Ronaldo Sousa, Phillip J. Haubrock   +2 more
wiley   +1 more source

ESTIMATION OF AEOLIAN DUNE MIGRATION OVER MARTIAN SURFACE EMPLOYING HIGH PRECISION PHOTOGRAMMETRIC MEASUREMENTS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
At the present time, arguments continue regarding the migration speeds of Martian dune fields and their correlation with atmospheric circulation. However, precisely measuring the spatial translation of Martian dunes has been rarely successful due to the ...
J. Kim
doaj   +1 more source