Results 41 to 50 of about 39,548 (162)

Raman, MIR, VNIR, and LIBS Spectra of Szomolnokite, Rozenite, and Melanterite: Martian Implications

open access: yesUniverse
Different sulfates (Ca-, Mg, and Fe- sulfates) have been extensively detected on the Martian surface. As one of the Martian sulfates, the presence of ferrous sulfates will provide valuable clues about the redox environment, hydrological processes, and ...
Xiai Zhuo   +4 more
doaj   +1 more source

The Caltech Mission to Apophis: Accelerating Planetary Science and Planetary Defense

open access: yesThe Planetary Science Journal
The close approach of asteroid (99942) Apophis in 2029 offers a rare opportunity to observe the reaction of a small, suspected rubble-pile body to planetary tidal forces, providing insight into its surface and interior properties and contributing ...
Adriana Daca   +10 more
doaj   +1 more source

Numerical Evaluation of Planetary Radar Backscatter Models for Self-Affine Fractal Surfaces

open access: yesRemote Sensing
Numerous analytical radar-scattering laws have been published through the past decades to interpret planetary radar observations, such as Hagfors’ law, which has been commonly used for the Moon, and the cosine law, which is commonly used in the shape ...
Anne Virkki
doaj   +1 more source

Augmenting sparse spaceflight mass spectra datasets for machine learning applications

open access: yesFrontiers in Astronomy and Space Sciences
Mass spectrometers are powerful instruments that aim to identify unknown compounds via their mass-to-charge ratio and perform quantitative and semi-quantitative analysis.
Victoria Da Poian   +10 more
doaj   +1 more source

A Microphysics Model of Multicomponent Venus' Clouds With a High‐Accuracy Condensation Scheme

open access: yesEarth and Space Science
Accurate modeling of the Venusian cloud structure remains challenging due to its complex microphysical properties. Condensation primarily determines the cloud particle size distribution within the various cloud layers.
H. Karyu   +8 more
doaj   +1 more source

Jupiter wind as a unifying bridge: a testable paradigm in the Tianwen-4 era

open access: yesEarth and Planetary Physics
Jupiter's rotating magnetic field, together with its satellites and rings, generate a composite flow that we term the Jupiter wind in this paper: a multi-source mixture of particles originating from Io's volcanism, Jupiter’s other moons, its rings, and ...
WeiDong Gu   +4 more
doaj   +1 more source

Editorial: The links between space plasma physics and planetary science

open access: yesFrontiers in Astronomy and Space Sciences, 2023
K. Dialynas, R. C. Allen, E. Roussos
doaj   +1 more source

Charged Clouds of Ionized Gas Emerge from Tribocharging Grains

open access: yesThe Planetary Science Journal
If two solid particles collide, charge is exchanged. However, this transfer is not restricted to the surface of the particle. Ions are also dispersed into the environment. They form a charge cloud around the particle.
Patrick Hock, Jens Teiser, Gerhard Wurm
doaj   +1 more source

Temperatures of Jupiter’s Upper Atmosphere: The Role of the Planetary Magnetic Field

open access: yesThe Astrophysical Journal Letters
The primary source of heating in the upper atmospheres (thermospheres) of giant planets has been the subject of long debate. The conundrum (or “energy crisis”) consists in observed thermosphere temperatures at low and midlatitudes exceeding values ...
Ingo C. F. Müller-Wodarg   +4 more
doaj   +1 more source

Effects of the 2007 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere

open access: yesThe Planetary Science Journal
Mars's magnetosphere is a sensitive system, varying due to external and internal factors, such as solar wind conditions and crustal magnetic fields.
Catherine E. Regan   +10 more
doaj   +1 more source

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