Results 101 to 110 of about 189,416 (301)

Mercury's Tidal Love Number h2 ${h}_{2}$ From Co‐Registration of MLA Profiles

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract Due to its eccentric orbit, Mercury experiences a varying gravitational pull from the Sun along its orbit, leading to periodic surface tidal deformation. The previous measurement of Mercury's tidal h2 ${h}_{2}$ by Bertone et al. (2021, https://doi.org/10.1029/2020je006683) is based on minimizing height differences at cross‐overs of the Mercury
Haifeng Xiao, Alexander Stark, Gregor Steinbrügge, Arthur Briaud, Luisa M. Lara, Pedro J. Gutiérrez   +5 more
wiley   +1 more source

Investigating the Martian atmosphere using the ExoMars 2016 lander [PDF]

, 2015
Accurate modelling of the Martian atmosphere is essential both for planning and completing future missions to the Martian surface, and for accurate analysis and interpretation of the data that they return.
Balme, M. R., Chapman, R. M., Lewis, S. R., Steele, L. J.   +3 more
core  

The search for ancient life on Mars using morphological and mass spectrometric analysis: an analog study in detecting microfossils in Messinian gypsum

Frontiers in Astronomy and Space Sciences
Hydrated sulfate deposits have been detected on Mars. A spaceflight instrument capable of detecting microfossils in these salt deposits is highly important for the search for ancient life on Mars.
Youcef Sellam, Salome Gruchola, Marek Tulej, Peter Keresztes Schmidt, Andreas Riedo, Andreas Riedo, Sofiane Meddane, Peter Wurz, Peter Wurz   +8 more
doaj   +1 more source

Evolution of Force‐Free Magnetic Structure in the Dayside Ionosphere of Mars

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract Magnetic fields measured in the ionosphere of Mars by the magnetometers onboard the Mars Atmosphere and Volatile EvolutioN (MAVEN) and the Mars Global Surveyor (MGS) spacecraft display a wide range of spatial scales, ranging from global to small‐scale.
T. E. Cravens, O. Hamil, A. R. Renzaglia, S. R. Shaver, S. A. Ledvina, C. S. Kennedy   +5 more
wiley   +1 more source

Bacillus subtilis Spore Resistance to Simulated Mars Surface Conditions

Frontiers in Microbiology, 2019
In a Mars exploration scenario, knowing if and how highly resistant Bacillus subtilis spores would survive on the Martian surface is crucial to design planetary protection measures and avoid false positives in life-detection experiments.
Marta Cortesão, Felix M. Fuchs, Fabian M. Commichau, Patrick Eichenberger, Andrew C. Schuerger, Wayne L. Nicholson, Peter Setlow, Ralf Moeller   +7 more
doaj   +1 more source

Surface Waves along the Martian Ionopause

Acta Physica Polonica A, 2013
We study the behaviour of surface waves propagating along the ionopause of the planet Mars and derive the onset criteria for unstable Kelvin Helmholtz modes and negative energy waves at the Martian ionopause. Growth rate of unstable Kelvin Helmholtz mode decreases with wavelength.
N. Kumar, P. Chmielewski, K. Murawski
openaire   +2 more sources

Questioning the Reliability of Methane Detections on Mars by the Curiosity Rover

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Over the past decade, the Tunable Laser Spectrometer (TLS) on NASA's Curiosity rover has reported several detections of methane on Mars, attracting attention due to the potential astrobiological implications of its presence. Here, we re‐analyze published TLS data, identifying issues in data robustness and reduction.
Sébastien Viscardy, David C. Catling, Kevin Zahnle   +2 more
wiley   +1 more source

Martian surface properties [PDF]

The objectives were: to characterize surficial geologic units through integration of Infrared Thermal Mapper (IRTM)-derived regolith properties with other existing remote sensing data; to determine the physical and spectral properties of volcanic units ...
Greeley, R.
core   +1 more source

Identifying Landslides in Atla Regio on Venus

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract We performed a systematic search for landslides in the Alta Regio region of Venus, located from (16°S, 179°W) to (21°N, 147°W). Using data primarily from Magellan Cycle 1 radar imagery, we identified 29 landslides in this region. There were 19 previously identified across the entire surface (Malin, 1992, https://doi.org/10.1029/92je01343 ...
E. L. Jesina, L. M. Carter, I. Ganesh
wiley   +1 more source

Martian surface materials [PDF]

A semiquantitative appreciation for the physical properties of the Mars surface materials and their global variations can be gained from the Viking Lander and remote sensing observations.
Moore, H. J.
core   +1 more source