Results 31 to 40 of about 194,727 (195)

Sources of Planetary Ionospheres

, 1994
The sources of dayside and nightside ionospheres of the terrestrial and outer planets and their satellites are discussed. The sources of dayside ionospheres include photoionization of neutral thermospheric constituents by solar ultraviolet and x-ray ...
Fox, Jane L.
core   +2 more sources

Evaluating Local Ionization Balance in the Dayside Martian Ionosphere

The Astronomical Journal
Local ionization balance (LIB), defined as the equality between ion production and ion destruction, is a fundamental assumption underlying classical descriptions of the dayside Martian ionosphere.
Wenjun Liang, Yutian Cao, Jun Cui, Xiaoshu Wu, Debang Cao, Tielong Zhang   +5 more
doaj   +1 more source

Variability of the Martian ionosphere from the MAVEN Radio Occultation Science Experiment

Earth and Planetary Physics, 2019
The Martian ionosphere is produced by a number of controlling processes, including solar extreme ultraviolet radiation (EUV) and X-ray ionization, impact ionization by precipitating electrons, and day-to-night transport.
MeiJuan Yao, Jun Cui, XiaoShu Wu, YingYing Huang, WenRui Wang   +4 more
doaj   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki, Michael E. Jackson, Glen S. Mattioli, David J. Mencin, Karl Feaux, Donna J. Charlevoix   +5 more
wiley   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

ANTARCTICA: A TREASURE–TROVE FOR PLANETARY SCIENCES. AUSTRALASIAN MICROTEKTITES FROM EAST ANTARCTICA [PDF]

, 2020
The planetary science community has benefitted greatly from research in Antarctica. The discovery of large accumulations of meteorites in blue ice fields on the polar plateau since 1969 and of cosmic dust in Antarctic ice, snow and supraglacial moraines ...
Folco L
core  

On the Seasonal Variations of the Ion Precipitation Down to the Upper Atmosphere of Mars

The Astrophysical Journal
We investigate the seasonal variations of ion precipitation, utilizing observations from the Mars Atmosphere and Volatile Evolution mission spanning from 2014 January 4 to 2023 February 14.
Xinzhi Qiu, Yiqun Yu, Fan Gong, Longxing Ma, Haoyu Lu, Jinbin Cao   +5 more
doaj   +1 more source

A Machine Learning‐Based Model of Three‐Dimensional Ion Fluxes in the High‐Altitude Earth's Northern Cusp

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Magnetic reconnection at the dayside magnetopause is the primary pathway for transferring mass, momentum, and energy from the solar wind into the terrestrial magnetosphere. Previous studies have shown that the spatiotemporal dynamics of dayside magnetic reconnection can be inferred remotely from properties of Earth's cusps, specifically their ...
Gonzalo Cucho‐Padin, David Sibeck, Xueyi Wang, Daniel da Silva, Xiaolei Li, Gowtan Valluri, Cristian Ferradas, Hyunju Connor, Yu Lin   +8 more
wiley   +1 more source

The two-frequency, bistatic radar-occultation method for the study of planetary ionospheres scientific reports no. 1 and no. 7 [PDF]

, 1965
Method for study of planetary ionospheres based on radio wave propagation between earth and ...
Smith, F. L., III, Garriott, O. K., Eshleman, V. R., Fjeldbo, G.   +3 more
core  

A Machine‐Learning Surrogate for Differentiable Phase Equilibrium Modeling of Mantle Rocks on a Planetary Scale

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Modeling processes within Earth's and other planetary bodies' mantle requires constraints from phase equilibrium to infer how changes in phase abundance and composition affect physical properties and geochemical processes. When applying such thermodynamic models on a planetary scale, performance becomes especially crucial.
Philip Hartmeier, Pierre Lanari
wiley   +1 more source