Results 51 to 60 of about 2,040 (178)

From Tape Reels to Global Access: A History and Future Vision of NASA's Scientific Data Management

Earth and Space Science, Volume 12, Issue 9, September 2025.
Abstract Since its creation in the late 1950s, NASA has collected space science data and information that span astrophysics, Earth science, planetary science, heliophysics, and biological and physical sciences. While these data were critical to NASA's objective of expanding human knowledge of space, the early days of scientific data and information ...
Kaylin Bugbee, Rahul Ramachandran
wiley   +1 more source

Inversion of Global Thermospheric Density Map Based on Satellite Measurements Using Deep Learning RFR Network

Earth and Space Science, Volume 12, Issue 9, September 2025.
Abstract The estimation error of neutral mass density is a major source of uncertainty in calculating thermospheric drag, which is the primary non‐gravitational perturbation affecting satellites in low Earth orbit. Many empirical models and physics‐based models are commonly used to forecast the thermospheric density, but significant deviations might ...
Kun Zhang, Fengsi Wei, Yanshi Huang, Pingbing Zuo, Mengfei Sun, Shijin Wang, Hao Yang, Jinlong Ji, Huan Shi, Liping Lv, Zehao Chen   +10 more
wiley   +1 more source

The dynamic universe: realizing the potential of classical time domain and multimessenger astrophysics

Frontiers in Astronomy and Space Sciences
In parallel with the multi-messenger revolution, major advances in time-domain astronomy across multiple science disciplines relevant to astrophysics are becoming more urgent to address.
R. Sambruna, J. Racusin, Eric Perlman, S. B. Howell, SB Howell, D. Howell, R. Street, M. Soares-Furtado, TP Greene, D. Howell, R. Street, Brian Jackson, Thomas P. Greene   +12 more
semanticscholar   +1 more source

Stability of the Earth's Dayside Magnetosheath: Effects of Upstream Solar Wind Structures and Downstream Jets

Journal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.
Abstract The constant stream of plasma from the Sun, the solar wind, forms a bow shock as it interacts with Earth's magnetic field. The plasma properties change drastically as it crosses the shock and enter the downstream magnetosheath. This extended region hosts various kinetic ion plasma instabilities, such as mirror modes, ion cyclotron waves, and ...
Florian Koller, Cyril Simon Wedlund, Manuela Temmer, Ida Svenningsson, Luis Preisser, Adrian Pöppelwerth, Pauline A. Simon, Zoltán Vörös, Christopher H. K. Chen, Owen W. Roberts, Ferdinand Plaschke   +10 more
wiley   +1 more source

Fermi Acceleration of Electrons at Earth's Bow Shock Due To Current Sheet Interaction

Journal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.
Abstract We use the Magnetospheric Multiscale (MMS) mission to present a case study of electron acceleration at Earth's bow shock due to an interaction with a solar wind magnetic depression. The magnetic depression is identified as a reconnecting current sheet and is observed both at the bow shock, using MMS, and upstream of the shock at the Lagrange ...
M. Lindberg, X. Shi, H. Hietala, L. Vuorinen, S. Raptis, F. Koller, A. Lalti   +6 more
wiley   +1 more source

Lobate Forms Around Craters on the Moon and Mercury: Origin From Landslides, Ejecta Flows and Modification Stage Collapse

Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract Lobate forms emanate from impact craters and have morphologies indicating ground‐hugging emplacement via flow. We present global surveys of lobate forms on the Moon and Mercury. Very few examples have previously been reported on either body, with debate over their interpretation as either crater rim landslides or ejecta flows.
A. J. Blance, A. R. Lennox, D. A. Rothery, M. Balme, J. Wright, V. Galluzzi, S. J. Conway   +6 more
wiley   +1 more source

Enceladus Water Plume Modeling Using DSMC

Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract This study investigates the water plumes of Saturn's moon, Enceladus, using Direct Simulation Monte Carlo (DSMC) modeling to analyze venting dynamics and plume structures. Building on prior research, we employ a parametrized DSMC approach to model water vapor and ice particle flows, leveraging Cassini spacecraft data from instruments such as ...
A. Mahieux, D. B. Goldstein, P. L. Varghese, L. M. Trafton, G. Portyankina, L. W. Esposito, M. E. Perry, J. H. Waite, B. S. Southworth, S. Kempf   +9 more
wiley   +1 more source

On the Crustal Architecture of the Terrestrial Planets

Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract Understanding the structure and composition of planetary crusts is fundamental for unraveling the diverse geologic pathways of rocky bodies in the solar system. In recent years, geophysical missions have shed light on the crustal architecture of the Moon and Mars.
A. Broquet, J. Maia, M. A. Wieczorek
wiley   +1 more source

The Effect of Uncertainties in Reproducing the Ambient Solar Wind at Earth on Forecasting CME Arrival Times

Space Weather, Volume 23, Issue 9, September 2025.
Abstract Coronal Mass Ejections (CMEs) are the major drivers of Space Weather (SWx), so predicting their arrival at Earth is a major aspect of SWx forecasting. Despite increasingly complex models proposed over the past decades, the mean absolute error (MAE) for predictions of CME arrival still surpasses 10 hr. In this study, we use machine learning (ML)
Syed A. Z. Raza, Talwinder Singh, Nikolai V. Pogorelov   +2 more
wiley   +1 more source

Comparative Study of the Single‐Event Functional Interrupt (SEFI) Rate in Solid‐State Drives (SSD) Through Ground and On‐Orbit Testing

Space Weather, Volume 23, Issue 9, September 2025.
Abstract Space radiation poses a significant threat to the reliability of spacecraft equipment, while traditional static space environment models exhibit substantial inaccuracies in calculating on‐orbit error rates. This study investigates single‐event functional interrupts (SEFIs) in commercial off‐the‐shelf (COTS) solid‐state drives (SSDs) operating ...
Yingqi Ma, Tian Yu, Xiaoheng Xu, Peng Guo, Chunqin Wang, Guohong Shen, Zhikang Fu, Longlong Zhang, Jieyi Wang, Bo Yang, Yunziwei Deng, Qiang Li, Long Zhang   +12 more
wiley   +1 more source