Results 31 to 40 of about 186,384 (251)
Experimental Investigation of the Atmosphere-Regolith Water Cycle on Present-Day Mars
Sensors, 2021 The water content of the upper layers of the surface of Mars is not yet quantified. Laboratory simulations are the only feasible way to investigate this in a controlled way on Earth, and then compare it with remote and in situ observations of spacecrafts
Abhilash Vakkada Ramachandran +2 more
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Optical Constants of Martian Dust Analogs at UV–Visible–Near-infrared Wavelengths
The Astrophysical Journal Supplement Series, 2023 We present an advanced light-scattering model to retrieve the optical constants of three Martian dust analogs: Johnson Space Center regolith simulant, Enhanced Mojave Mars Simulant, and Mars Global Simulant.
Julia Martikainen +9 more
doaj +1 more source
Geophysical Research Letters, 2023 Heterogeneous electrochemistry induced by Martian dust activity is an important type of atmosphere‐surface interaction that affects geochemical processes at the Martian surface and in the Martian atmosphere.
Alian Wang +6 more
doaj +1 more source
Microbial growth in actual martian regolith in the form of Mars meteorite EETA79001
Communications Earth & Environment, 2023 Studies to understand the growth of organisms on Mars are hampered by the use of simulants to duplicate martian mineralogy and chemistry. Even though such materials are improving, no terrestrial simulant can replace a real martian sample.
Neveda Naz +3 more
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Perchlorates on Mars enhance the bacteriocidal effects of UV light
Scientific Reports, 2017 Perchlorates have been identified on the surface of Mars. This has prompted speculation of what their influence would be on habitability. We show that when irradiated with a simulated Martian UV flux, perchlorates become bacteriocidal.
Jennifer Wadsworth, Charles S. Cockell
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A GRADIENT-REGION CONSTRAINED LEVEL SET METHOD FOR AUTONOMOUS ROCK DETECTION FROM MARS ROVER IMAGE [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 Rocks are one of the major Martian surface features and yield significant information about the relevant geology process and the life exploration. However, autonomous Martian rock detection is still a challenging task due to the appearance similar to the
J. Yang, Z. Kang
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Detection of spark discharges in an agitated Mars dust simulant isolated from foreign surfaces [PDF]
, 2020 Numerous laboratory experiments, starting in the Viking Lander era, have reported that frictional interactions between Martian analog dust grains can catalyze electrostatic processes (i.e. triboelectrification). Such findings have been cited to suggest that Martian dust devils and dust storms may sustain lightning storms, glow discharges, and other ...
arxiv +1 more source
Frontiers in Astronomy and Space Sciences, 2022 The detailed Martian Energetic Radiation Environment Model (dMEREM) is a Geant4 based model developed for the European Space Agency, which enables to predict the radiation environment expected at different locations on the Martian orbit, atmosphere and ...
Patrícia Gonçalves +3 more
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A new martian crater chronology: Implications for Jezero crater [PDF]
, 2021 Crater chronologies are a fundamental tool to assess relative and absolute ages of planetary surfaces when direct radiometric dating is not available. Martian crater chronologies are derived from lunar crater spatial densities on terrains with known radiometric ages, and thus they critically depend on the extrapolation Moon to Mars.
arxiv +1 more source
The Astrophysical Journal, 1967 Inconsistency in Martian surface pressure as calculated by Gray explained, using Leighton and Murray ...
L. D. Gray, Ronald A. Schorn
openaire +2 more sources