Results 81 to 90 of about 1,782 (160)
When Laboratory Studies of Plumes Shed the Veil of the Enceladus' Interior
Abstract Since the discovery by Cassini of plumes of water vapor and icy particles erupting from the South Polar Terrain (SPT) of Enceladus, numerous numerical models have been proposed to explain the mechanism driving these plumes, and how they relate to the thermodynamic conditions inside the underlying crevasses.
Yaël R. A. Bourgeois +2 more
wiley +1 more source
Abstract The Viking missions landed two spacecraft on Mars each equipped with a pyrolysis‐gas chromatograph‐mass spectrometer system capable of detecting signs of life. Although working as intended, detections of chloromethane and dichloromethane were initially attributed to terrestrial contamination.
A. Mojarro +11 more
wiley +1 more source
Sulfidation Reaction Mechanisms of Olivine and Diopside at Mercury's Reducing Conditions
Abstract The surface of Mercury contains elevated amounts of sulfur of up to 4 wt.%. Volcanic degassing of S from the interior of the planet could have initiated sulfidation reactions between the degassed S and surface materials in the planet's past, leading to the observed surface S enrichment.
Rody C. Erftemeijer +2 more
wiley +1 more source
Abstract We present an ensemble of five artificial neural network (ANN) models, extending and upgrading a previous model that reconstructs >30 keV equatorial electron flux measurements from low‐Earth‐orbit (LEO) satellite observations. We use the global coherent nature of the radiation belts to map data collected from the Polar Orbiting Environmental ...
D. L. Stumbaugh, J. Bortnik
wiley +1 more source
Abstract During November 2025 thousands of commercial aircraft (Airbus A320s) had to be grounded due to the risk of ionizing radiation effects on the avionics system. Safety‐critical systems continue to use modern commercial devices, and therefore an understanding of their responses within enhanced radiation environments is crucial to ensure reliable ...
M. Barker, K. Ryden, C. Dyer, F. Lei
wiley +1 more source
The Effect of Field Line Tracing Height on Wang‐Sheeley‐Arge Solar Wind Predictions at Earth
Abstract A key component of the widely used Wang‐Sheeley‐Arge model is the tracing of magnetic field lines in the solar corona, as that largely determines the modeled open/closed field regions and in turn the predicted large‐scale solar wind structure. However, small closed field regions interspersed among the open field lines inside coronal holes (CHs)
Satabdwa Majumdar +3 more
wiley +1 more source
Abstract Equatorial plasma bubbles (EPBs) are major low‐latitude ionospheric irregularities that can cause scintillation and degrade Global Navigation Satellite System (GNSS) performance. Existing amplitude‐scintillation prediction methods primarily use historical GNSS observations and ionospheric parameters, but rarely incorporate the evolving spatial
Haoyang Guo +9 more
wiley +1 more source
Exploring Jupiter's Mid‐Latitude Dusk Magnetopause: The Impact of Magnetic Reconnection
Abstract The Juno mission has elucidated magnetosphere processes, structure, and dynamics via multi‐instrument plasma and magnetic field observations. In this study, these instruments are used to identify magnetic reconnection during the Juno extended mission from a survey of 490 magnetopause crossings at the mid‐latitude southern dusk magnetopause ...
J. Montgomery +8 more
wiley +1 more source
Abstract The carbon dioxide (CO2)/argon (Ar) ratio is a useful tracer of atmospheric circulation on Mars, but it remains observationally poorly constrained in the middle atmosphere, where large‐scale circulation occurs. In this study, we infer the CO2/Ar ratio at the homopause, which marks the upper boundary of the well‐mixed Martian middle atmosphere,
JunFeng Qin +4 more
wiley +1 more source
Abstract Gamma‐ray glows are prolonged enhancements of gamma rays from thunderclouds, which are often linked to large‐scale electric fields rather than individual lightning. The link between glows and lightning remains poorly understood. Here, we analyzed 300 glows observed during the ALOFT aircraft campaign and optical lightning detected by GLM.
Chu‐Nan Zhang +10 more
wiley +1 more source

