Results 31 to 40 of about 113,594 (358)

Measurements of Forbush decreases at Mars: both by MSL on ground and by MAVEN in orbit

, 2017
The Radiation Assessment Detector (RAD), on board Mars Science Laboratory's (MSL) Curiosity rover, has been measuring ground level particle fluxes along with the radiation dose rate at the surface of Mars since August 2012. Similar to neutron monitors at
Boettcher, Stephan, Dunn, Patrick, Ehresmann, Bent, Guo, Jingnan, Halekas, Jasper, Hassler, Donald M., Larson, Davin, Lee, Christina O., Lillis, Robert, Lundt, Niklas, Papaioannou, Athanasios, Posner, Arik, Rahmati, Ali, Simonson, Patrick, Wimmer-Schweingruber, Robert F., Zeitlin, Cary   +15 more
core   +1 more source

The Atmospheres of Mars and Venus [PDF]

Annual Review of Astronomy and Astrophysics, 1961
Of all the planets which may exist in the Universe, only nine have been studied by man. As a result, one cannot classify planets with the same confidence that one has in classifying stars; there is no theory of planetary evolution comparable in development to the theory of stellar evolution.
Ingersoll, Andrew P., Leovy­, Conway B.   +1 more
openaire   +3 more sources

Sublimation of terrestrial permafrost and the implications for ice-loss processes on Mars

Nature Communications, 2019
Sublimation of ice is believed to have generated a variety of landforms on Mars and other planetary bodies. Here the authors show the first long-term in situ effective diffusion coefficient of terrestrial ice-free loess (Mars analog soil), scaled to Mars
Thomas A. Douglas, Michael T. Mellon
doaj   +1 more source

Earth – Mars Similarity Criteria for Martian Vehicles [PDF]

INCAS Bulletin, 2010
In order to select the most efficient kind of a martian exploring vehicle, the similarity criteria are deduced from the equilibrium movement in the terrestrial and martian conditions.
Octavian TRIFU, George SAVU
doaj   +1 more source

Mariner 6: Ultraviolet Spectrum of Mars Upper Atmosphere [PDF]

Science, 1969
Emission features from ionized carbon dioxide and carbon monoxide were measured in the 1900- to 4300-angstrom spectral region. The Lyman alpha 1216-angstrom line of atomic hydrogen and the 1304-, 1356-, and 2972-angstrom lines of atomic oxygen were observed.
C A, Barth, W G, Fastie, C W, Hord, J B, Pearce, K K, Kelly, A I, Stewart, G E, Thomas, G P, Anderson, O F, Raper   +8 more
openaire   +2 more sources

The Ensemble Mars Atmosphere Reanalysis System (EMARS) Version 1.0

Geoscience Data Journal, 2019
The Ensemble Mars Atmosphere Reanalysis System (EMARS) dataset version 1.0 contains hourly gridded atmospheric variables for the planet Mars, spanning Mars Year (MY) 24 through 33 (1999 through 2017).
Steven J. Greybush, Eugenia Kalnay, R. John Wilson, Ross N. Hoffman, Thomas Nehrkorn, Mark Leidner, Janusz Eluszkiewicz, Hartzel E. Gillespie, Matthew Wespetal, Yongjing Zhao, Matthew Hoffman, Patrick Dudas, Timothy McConnochie, Armin Kleinböhl, David Kass, Daniel McCleese, Takemasa Miyoshi   +16 more
doaj   +1 more source

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

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

FEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino, Meijie Li, Cécile Fizames, Mattia Adamo, Laurence Lejay, Christian Dubos, Matthieu Platre, Antoine Martin   +7 more
wiley   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Martian Atmospheric Tides Revealed From MAVEN/IUVS and MRO/MCS Observations

Geophysical Research Letters
Utilizing atmospheric temperature observed from Mars Years 33–36 by the imaging ultraviolet spectrograph (IUVS) onboard the Mars atmosphere and volatile evolution (MAVEN) and Mars climate sounder (MCS) onboard Mars Reconnaissance Orbiter (MRO), we derive
Chengyun Yang, Tao Li, Mengzhen Yuan, Zhaopeng Wu, Xin Fang   +4 more
doaj   +1 more source