Results 321 to 330 of about 383,072 (432)

Helium in Mercury's Extended Exosphere Determined by Pick‐Up Generated Ion Cyclotron Waves

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Helium (He) was first detected by remote spectroscopic observations of the Ultraviolet Visible Spectrometers (UVVS) instrument in Mercury's exosphere during the three Mariner 10 flybys in 1974 and 1975. Here, we derive the first in situ radial density profile of He in Mercury's extended exosphere by analyzing magnetic field and plasma ...
F. Weichbold, H. Lammer, D. Schmid, M. Volwerk, J. Hener, A. Varsani, A. Vorburger, P. Wurz, C. Simon‐Wedlund   +8 more
wiley   +1 more source

The Design and Validation of a High-Precision Angular Vibration Calibration System Based on a Laser Vibrometer. [PDF]

Sensors (Basel)
Lin X, Huang Z, Guo K, Li G.
europepmc   +1 more source

The Hermean Helium Exosphere—Continuous and Sporadic Helium Release Processes

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Since its detection by Mariner 10, helium has been a key focus in studies of Mercury's exosphere. Recently, Weichbold et al. (2025), https://doi.org/10.1029/2024je008679 provided the first in situ helium measurements, inferring density from Ion Cyclotron Wave (ICW) events observed by the MESSENGER spacecraft.
J. Hener, P. Wurz, F. Weichbold, H. Lammer, D. Schmid, A. Vorburger   +5 more
wiley   +1 more source

VO₂-Based Spacecraft Smart Radiator with High Emissivity Tunability and Protective Layer. [PDF]

Nanomaterials (Basel)
Xu Q, Ji H, Ren Y, Ou Y, Liu B, Wang Y, Chen Y, Long P, Deng C, Wang J.   +9 more
europepmc   +1 more source

Gravity and Radio Science Investigation at the Moons of Uranus to Reveal Subsurface Oceans and Characterize Interior Structures

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract The prospect that the five major moons of Uranus could host subsurface oceans makes them high‐priority targets for future exploration. Different techniques can be used to search for deep oceans in these objects. Here, we focus on ocean detection and characterization from measurements of the moons' response to the gravitational tides and ...
Flavio Petricca, Damon Landau, Mohit Melwani Daswani, Julie Castillo‐Rogez   +3 more
wiley   +1 more source

Thermally Conductive Shape-Stabilized Phase Change Materials Enabled by Paraffin Wax and Nanoporous Structural Expanded Graphite. [PDF]

Nanomaterials (Basel)
Zhao Y, Huang S, Jin Z, Xie Z, Guo H, Xie H.   +5 more
europepmc   +1 more source

Fractional Crystallization Scenario for Magma Evolution on Mercury Inferred From Geochemical Variation Around the Caloris Basin

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract The observed geochemical heterogeneity on the surface of Mercury is key to understanding the planet's volcanic activity and mantle conditions. The Caloris basin shows a diversity in elemental composition, spectral properties, and geomorphology, both within and around it.
K. Hirata, T. Usui, E. Caminiti, J. Wright, S. Besse   +4 more
wiley   +1 more source

Juno Observations Set New Constraints on the Electrodynamic Interaction Between Io and Jupiter. [PDF]

J Geophys Res Space Phys
Kotsiaros S, Connerney JEP, Saur J, Kokkalis A, Herceg M, Martos YM, Schlegel S, Jørgensen JL, Bolton SJ.   +8 more
europepmc   +1 more source

NAIRAS Version 3 Atmospheric Ionizing Radiation Validation: Comparisons to RaD‐X Measurements

Space Weather, Volume 23, Issue 4, April 2025.
Abstract The Nowcast of Aerospace Ionizing RAdiation System (NAIRAS) model predicts dosimetric and radiative flux quantities for assessing human radiation exposure levels and radiation effects on flight electronic systems from the surface of the Earth to deep space. NAIRAS version 3 includes many updates and improvements to the model.
Christopher J. Mertens, Guillaume P. Gronoff, Daniel B. Phoenix   +2 more
wiley   +1 more source

Origin of reconnecting current sheets in shocked turbulent plasma. [PDF]

Sci Adv
Wang S, Lu S, Lu Q, Wang R, Ren J, Gao X, Guo J.   +6 more
europepmc   +1 more source