Results 51 to 60 of about 736,131 (304)

Evolution of the Martian Atmosphere [PDF]

Icarus, 1994
Carbon dioxide, nitrogen, and the nonradiogenic and radiogenic noble gases are tracked from primordial inventories to their present states in a revised model of atmospheric evolution on Mars. Elemental and isotopic abundances evolve by hydrodynamic escape, impact erosion, outgassing, sputtering, photochemical escape of nitrogen, and carbonate formation
openaire   +1 more source

Revisiting the Solar Wind Deceleration Upstream of the Martian Bow Shock Based on MAVEN Observations

The Astrophysical Journal
The solar wind deceleration upstream of the Martian bow shock is examined using particle and magnetic field measurements obtained by the Mars Atmosphere and Volatile EvolutioN (MAVEN).
Yuqi Liu, Kaijun Liu, Ducheng Lu, Hui Huang, Jingyi Zhou, Kun Cheng, Xianming Zheng, Yan Wang, Mengmeng Wang   +8 more
doaj   +1 more source

Martian atmospheric O₃ retrieval development for the NOMAD-UVIS spectrometer [PDF]

, 2017
The composition of atmospheric trace gases and aerosols is a highly variable and poorly constrained component of the martian atmosphere, and by affecting martian climate and UV surface dose, represents a key parameter in the assessment of suitability for
Hathi, B., Hewson, W., Holmes, J., Irwin, P. G. R., Leese, M., Lewis, S. R., Mason, J. P., Patel, M. R.   +7 more
core  

Modelling the martian atmosphere [PDF]

Astronomy and Geophysics, 2003
Mars general circulation models, used to study the atmosphere of Mars, have developed almost in parallel with terrestrial weather and climate models. These models are now being confronted with a large amount of new spacecraft data, which is allowing the models to be validated more rigorously. This paper briefly reviews the current state of Mars models,
openaire   +1 more source

The Promise of Solid Lubricants for a Sustainable Future

Advanced Materials, EarlyView.
Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Philipp G. Grützmacher, Andrey A. Voevodin, András Korényi‐Both, Maria Clelia Righi, Christopher DellaCorte, Nazlim Bagcivan, Ali Erdemir, Carsten Gachot   +7 more
wiley   +1 more source

PRECIPITATION OF ENERGETIC NEUTRAL ATOMS AND INDUCED NON-THERMAL ESCAPE FLUXES FROM THE MARTIAN ATMOSPHERE [PDF]

, 2014
The precipitation of energetic neutral atoms, produced through charge exchange collisions between solar wind ions and thermal atmospheric gases, is investigated for the Martian atmosphere.
N. Lewkow, V. Kharchenko
semanticscholar   +1 more source

Characterization of dust activity on Mars from MY27 to MY32 by PFS-MEX observations [PDF]

, 2018
We present spatial and temporal distributions of dust on Mars from Ls = 331 in MY26 until Ls = 80 in MY33 retrieved from the measurements taken by the Planetary Fourier Spectrometer (PFS) aboard Mars Express.
Aoki, Shohei, Aronica, Alessandro, Giuranna, Marco, Grassi, Davide, Saggin, Bortolino, Scaccabarozzi, Diego, Wolkenberg, Paulina   +6 more
core   +2 more sources

BeeRootBot: A Bioinspired Robotic Probe Exhibiting Apical Growth through In Situ Soil Binding

Advanced Intelligent Systems, EarlyView.
This study introduces a novel method for consolidating subterranean exploration pathways in plant‐inspired robots by binding in‐situ soil with beeswax, a biobased material. This simultaneous advancement and wall‐lining process reduces penetration resistance, enhances exploration efficiency, enables communication and resource sharing, and promotes ...
Sachin Sachin, Alessio Mondini, Stefano Mariani, Emanuela Del Dottore, Barbara Mazzolai   +4 more
wiley   +1 more source

The trapped heavy noble gases in recently found Martian meteorites [PDF]

, 2002
The composition of the trapped Ar, Kr, and Xe in the Martian meteorites Los Angeles, Say Al Uhaymir 005/008, and 094 is discussed and found to be consistent with a mixture of Martian mantle and atmosphere noble gases and terrestrial ...
Busemann, H., Eugster, O.
core  

Argon in the Martian atmosphere

Geophysical Research Letters, 1974
Heretofore undetected argon may be a significant constituent of the Martian atmosphere with a partial pressure of 1.8 mbar. The addition of argon to the 5.5±0.8 mbar of CO2, deduced from ground‐based spectroscopy, is consistent with the values of total pressure deduced from the Mariner radio occulation measurements. The presence of argon in the Martian
Joel S. Levine, Guenter R. Riegler
openaire   +1 more source