Results 221 to 230 of about 34,777 (278)

Analytical data on three Martian simulants. [PDF]

Data Brief
Costa N, Bonetto A, Ferretti P, Casarotto B, Massironi M, Altieri F, Nava J, Favero M.   +7 more
europepmc   +1 more source

The Abrasive Effect of Moon and Mars Regolith Simulants on Stainless Steel Rotating Shaft and Polytetrafluoroethylene Sealing Material Pairs. [PDF]

Materials (Basel)
Kalácska G, Barkó G, Shegawu H, Kalácska Á, Zsidai L, Keresztes R, Károly Z.   +6 more
europepmc   +1 more source

In situ neutron spectroscopy on the martian surface: modeling the hydra instrument for different mission scenarios

, 2003
R. C. Elphic, W. C. Feldman, K. R. Moore, T. H. Prettyman, Roger Weins   +4 more
openalex   +1 more source

Sulfites and sulfates formed by weathering of early martian carbonates in a sulfur dioxide-bearing atmosphere. [PDF]

Sci Rep
Chevrier VF, Gil-Lozano C, Dehouck E, Altheide ST.   +3 more
europepmc   +1 more source

Sub-surface deposits of hydrous silicates or hydrated magnesium sulfates as hydrogen reservoirs near the Martian equator : plausible or not?

, 2004
Claire I. Fialips, J. W. Carey, D. T. Vaniman, W. C. Feldman, D. L. Bish, M. T. Mellon   +5 more
openalex   +1 more source

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A model of Martian surface chemistry

Journal of Molecular Evolution, 1979
Alkaline earth and alkali metal superoxides and peroxides, gamma-Fe2O3 and carbon suboxide polymer are proposed to be constituents of the Martian surface material. These reactive substances explain the water modified reactions and thermal behaviors of the Martian samples demonstrated by all of the Viking Biology Experiments.
B. J. Berdahl, Vance I. Oyama
openaire   +3 more sources

Mineralogy of the Martian Surface

Annual Review of Earth and Planetary Sciences, 2014
The past fifteen years of orbital infrared spectroscopy and in situ exploration have led to a new understanding of the composition and history of Mars. Globally, Mars has a basaltic upper crust with regionally variable quantities of plagioclase, pyroxene, and olivine associated with distinctive terrains.
Ehlmann, Bethany L., Edwards, Christopher S.   +1 more
openaire   +3 more sources

The composition of the Martian surface

Icarus, 1964
Abstract It is generally believed that the desert areas of Mars are composed of limonite. This model of the surface, while based upon polarimetric, spectrometric, color, and albedo measurements, contradicts a reasonable geologic model. An examination of the evidence for limonite on Mars shows that the above measurements are ambiguous.
Roger A. Van Tassel, John W. Salisbury
openaire   +2 more sources

The Martian surface

Reviews of Geophysics, 1987
The past four years have been particularly fruitful for Martian research as the enormous volumes of data collected during the Viking mission became readily available to the general science community, and as reformatting of the remote sensing data into cartographic products made the data more useable.
openaire   +2 more sources

Martian surface simulations

Journal of Geophysical Research: Planets, 1993
Computer generated surfaces have been created to aid in imaging, landing and rover studies for Mars and the moon. They are also being applied to the study of cratering histories. The surfaces are generated in steps which attempt to mimic geologic episodes.
openaire   +2 more sources