Results 91 to 100 of about 736,131 (304)

Kinetic model of carbonate dissolution in Martian meteorite ALH84001 [PDF]

, 2003
The magnetites and sulfides located in the rims of carbonate globules in the Martian meteorite ALH84001 have been claimed as evidence of past life on Mars.
Humayun, Munir, Kopp, Robert E.
core   +1 more source

Formation of Caloris Basin's Positive Mass Anomaly by Thermal Contraction During Its Postimpact Evolution

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract Caloris basin preserves a record of Mercury's volcanic and tectonic activity, including the long‐wavelength warping of its surface in the north‐south direction. As Mercury's largest mascon basin, identifying Caloris' configuration prior to volcanic infilling is a key step in determining the series of events that led to its current state. Here,
G. J. Gosselin, A. M. Freed, B. C. Johnson   +2 more
wiley   +1 more source

Passive Observation of Martian Atmosphere Using O₂(a¹Δ_g) Airglow Radiation: Forward Simulation and Wind Retrieval

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The passive monitoring of Martian wind fields is crucial for deciphering the Martian atmosphere. With the 3 strong spectral lines in the 1.27 μm O2(a1Δg) airglow emission band, this article designs the Martian Static Wind Imaging Michelson ...
Zhengyi Chen, Biyun Zhang, Chunmin Zhang
doaj   +1 more source

Martian moons exploration MMX: sample return mission to Phobos elucidating formation processes of habitable planets

Earth, Planets and Space, 2022
Martian moons exploration, MMX, is the new sample return mission planned by the Japan Aerospace Exploration Agency (JAXA) targeting the two Martian moons with the scheduled launch in 2024 and return to the Earth in 2029.
Kiyoshi Kuramoto, Yasuhiro Kawakatsu, Masaki Fujimoto, Akito Araya, Maria Antonietta Barucci, Hidenori Genda, Naru Hirata, Hitoshi Ikeda, Takeshi Imamura, Jörn Helbert, Shingo Kameda, Masanori Kobayashi, Hiroki Kusano, David J. Lawrence, Koji Matsumoto, Patrick Michel, Hideaki Miyamoto, Tomokatsu Morota, Hiromu Nakagawa, Tomoki Nakamura, Kazunori Ogawa, Hisashi Otake, Masanobu Ozaki, Sara Russell, Sho Sasaki, Hirotaka Sawada, Hiroki Senshu, Shogo Tachibana, Naoki Terada, Stephan Ulamec, Tomohiro Usui, Koji Wada, Sei-ichiro Watanabe, Shoichiro Yokota   +33 more
doaj   +1 more source

A Thermal Plume Model for the Martian Convective Boundary Layer

, 2013
The Martian Planetary Boundary Layer [PBL] is a crucial component of the Martian climate system. Global Climate Models [GCMs] and Mesoscale Models [MMs] lack the resolution to predict PBL mixing which is therefore parameterized.
Colaïtis, Arnaud, Forget, François, Hourdin, Frédéric, Millour, Ehouarn, Rio, Catherine, Spiga, Aymeric   +5 more
core   +3 more sources

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

FEBS Letters, Volume 599, Issue 23, Page 3417-3443, December 2025.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Solar Wind Interaction With the Martian Upper Atmosphere: Roles of the Cold Thermosphere and Hot Oxygen Corona [PDF]

Journal of Geophysical Research: Space Physics, 2018
We study roles of the thermosphere and exosphere on the Martian ionospheric structure and ion escape rates in the process of the solar wind‐Mars interaction. We employ a four‐species multifluid magnetohydrodynamic model to simulate the Martian ionosphere
C. Dong, S. Bougher, Yingjuan Ma, Yuni Lee, G. Tóth, A. Nagy, X. Fang, J. Luhmann, M. Liemohn, J. Halekas, V. Tenishev, D. Pawlowski, M. Combi   +12 more
semanticscholar   +1 more source

A First Look at Carbon and Oxygen Stable Isotope Measurements of Martian Atmospheric C02 by the Phoenix Lander [PDF]

, 2009
Precise stable isotope measurements of the CO2 in the martian atmosphere have the potential to provide important constraints for our understanding of the history of volatiles, the carbon cycle, current atmospheric processes, and the degree of water/rock ...
Boynton, W.V., Hamara, D., Hoffman, J.H., Ming, D.W., Niles, P.B.   +4 more
core   +1 more source

Trace Element Transport and Deposition During Magmatic Degassing: The Effect on Martian Rocks and Fines

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract Martian magmas compositionally resemble those from terrestrial continental hotspot magmatic suites, characterized by low OH and high Cl and S contents. The magmatic gases exsolved from such magmas transport a variety of metal complexes and, upon cooling, precipitate vapor‐deposits into vugs and fractures within rocks and on the surfaces of ...
N. Zimmermann, M. Safari, H. Nekvasil
wiley   +1 more source

Very high elevation water ice clouds on Mars: Their morphology and temporal behavior [PDF]

Quantitative analysis of Viking images of the martian planetary limb has uncovered the existence and temporal behavior of water ice clouds that form between 50 and 90 km elevation.
Jaquin, Fred
core   +1 more source