Results 21 to 30 of about 109,426 (361)
The Planetary Science Journal, 2023 Present-day Mars is cold and dry, but mineralogical and morphological evidence shows that liquid water existed on the surface of ancient Mars. In order to explain this evidence and assess ancient Mars’s habitability, one must understand the size and ...
Trent B. Thomas, Renyu Hu, Daniel Y. Lo
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MAVEN Observations of the Interloop Magnetic Reconnections at Mars
The Astrophysical Journal, 2023 Magnetic reconnection between neighboring magnetic field loops, the so-called interloop reconnection, is a common process to drive flares in the solar atmosphere.
Guo Chen +9 more
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The Mars Topside Ionosphere Response to the X8.2 Solar Flare of 10 September 2017
Geophysical Research Letters, 2018 On 10 September 2017, irradiance from a magnitude X8.2 solar flare impacted Mars while the Mars Atmosphere and Volatile EvolutioN (MAVEN) orbiter was characterizing the Mars upper atmosphere.
E. M. B. Thiemann +15 more
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Geophysical Research Letters, 2022 Carbon monoxide (CO) is a sensitive tracer of the thermal profile and winds in Mars' middle atmosphere and the chemistry that balances CO2 in the whole atmosphere of Mars.
J. S. Evans +15 more
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Martian Proton Aurora Brightening Reveals Atmospheric Ion Loss Intensifying
Geophysical Research Letters, 2023 The Martian proton aurora is a distinct aurora phenomenon resulting from the direct deposition of solar wind energy into Mars' dayside atmosphere. What solar wind parameters influence the aurora activity in the short term is yet unknown, as are the ...
Fei He +12 more
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Variability of Bow Shock Location at Mars [PDF]
Journal of Astronomy and Space Sciences, 1999 Bow shock formation, in case the supersonic solar wind flow is hindered by the atmosphere of Mars, is investigated. The atoms newly ionized from the extensive neutral atmosphere of Mars are loaded to the solar wind.
Yu Yi, Eojin Kim, Yong Ha Kim, Jhoon Kim
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Long-term variability of CO2 and O in the Mars upper atmosphere from MRO radio science data [PDF]
, 2015 We estimate the annual variability of CO2 and O partial density using approximately 6years of Mars Reconnaissance Orbiter (MRO) radio science data from August 2006 to January 2012, which cover three full Martian years (from the northern hemisphere summer
Fricke, Susan K. +6 more
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Atmospheric processes affecting methane on Mars [PDF]
Icarus, 2022 It is currently uncertain as to whether methane exists on Mars. Data from the Curiosity Rover suggests a background methane concentration of a few tenths parts per billion whereas data from the Trace Gas Orbiter suggest an upper limit of twenty parts per trillion.
Grenfell, John Lee +8 more
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Sintering of ceramics for clay in situ resource utilization on Mars
Open Ceramics, 2020 The sintering of wet processed Mars global simulant green bodies is explored. Green bodies shaped using slip casting, throwing on a potter’s wheel and additive manufacturing, including material extrusion (robocasting) and layerwise slurry deposition (LSD)
David Karl +7 more
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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
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