Results 71 to 80 of about 88,907 (241)

Prediction of transits of solar system objects in Kepler/K2 images: An extension of the Virtual Observatory service SkyBoT

open access: yes, 2016
All the fields of the extended space mission Kepler/K2 are located within the ecliptic. Many solar system objects thus cross the K2 stellar masks on a regular basis.
Berthier, J.   +4 more
core   +3 more sources

A Small Pathbreaking Spacecraft: Giants of Space Research (Bernard Blake, Dieter Hovestadt, and Edward Stone)

open access: yesPerspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract The Solar, Anomalous, and Magnetospheric Explorer (SAMPEX) mission launched in July 1992 was the first NASA “Small Explorer” project. It had the goal to show how space missions could be developed much more rapidly than had become the situation in the 1980s and 1990s.
D. N. Baker, G. M. Mason
wiley   +1 more source

The formation of planetary disks and winds: an ultraviolet view

open access: yes, 2008
Planetary systems are angular momentum reservoirs generated during star formation. This accretion process produces very powerful engines able to drive the optical jets and the molecular outflows.
A.I. Gómez de Castro   +40 more
core   +1 more source

An Asymmetric Galactic Stellar Disk Traced by OB-type Stars from LAMOST DR7

open access: yesResearch in Astronomy and Astrophysics
Using 9943 OB-type stars from LAMOST DR7 in the solar neighborhood, we fit the vertical stellar density profile with the model including a single exponential distribution at different positions (R, Φ).
Xiaopeng Liu   +6 more
semanticscholar   +1 more source

Post‐Wildfire Sediment Fluxes and Turbidity Plumes in a Coastal‐Draining Watershed

open access: yesEarth and Space Science, Volume 12, Issue 12, December 2025.
Abstract Coastal watersheds impacted by wildfires experience higher erosion resulting in increased sediment delivery to the ocean that alters limiting factors (i.e., light) for marine organisms. With increasing wildfire magnitude and severity, it is critical to explore changes in riverine discharges to the ocean to assess cascading hazards associated ...
Amanda M. Lopez   +6 more
wiley   +1 more source

Measuring mean densities of delta Scuti stars with asteroseismology. Theoretical properties of large separations using TOUCAN

open access: yes, 2014
We aim at studying the theoretical properties of the regular spacings found in the oscillation spectra of delta Scuti stars. We performed a multi-variable analysis covering a wide range of stellar structure and seismic properties and model parameters ...
A. García Hernández   +62 more
core   +1 more source

Influence of the Earthward and Tailward Ion Flows on the Lunar Surface Water in the Magnetotail

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract Earth wind, namely the particles from the Earth's magnetotail, is an important source of lunar water. Besides tailward flow incident on the lunar nearside when the Moon is in the magnetotail, there exists earthward flow bombarding the farside, affecting the distribution and preservation of lunar water.
H. Z. Wang   +21 more
wiley   +1 more source

The fundamental parameters of the roAp star 10 Aql

open access: yes, 2013
Due to the strong magnetic field and related abnormal surface layers existing in rapidly oscillating Ap stars, systematic errors are likely to be present when determining their effective temperatures, which potentially compromises asteroseismic studies ...
Bigot, L.   +14 more
core   +2 more sources

Radar Polarimetry in Glaciology: Theory, Measurement Techniques, and Scientific Applications for Investigating the Anisotropy of Ice Masses

open access: yesReviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract Dielectric anisotropy in ice alters the propagation of polarized radio waves, so polarimetric radar sounding can be used to survey anisotropic properties of ice masses. Ice anisotropy is either intrinsic, associated with ice‐crystal orientation fabric (COF), or extrinsic, associated with material heterogeneity, such as bubbles, fractures, and ...
Benjamin H. Hills   +30 more
wiley   +1 more source

Ingestion of GNSS‐Derived‐TEC Into NeQuick 2 Model Over South America

open access: yesSpace Weather, Volume 23, Issue 12, December 2025.
Abstract This study examines the ingestion of total electron content (TEC) data from a network of ground‐based Global Navigation Satellite System (GNSS) receivers into the NeQuick 2 model, providing a benchmark for evaluating the cost‐effectiveness of GNSS data ingestion for near‐real‐time ionospheric specification. A significant reduction in root mean
Taiwo Olusayo Osanyin   +4 more
wiley   +1 more source

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