Results 101 to 110 of about 1,881 (201)

Microstructure Controls Sublimation Timescales of Exposed Salt‐Rich Ices on Icy Worlds

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract Salt‐rich water ice at the surfaces of icy worlds, for example, Europa, Enceladus, and Ceres, is of particular interest for Solar System exploration as it can represent a record of the chemistry and potential habitability of subsurface liquid water. Endogenic salts can originate by gradual freezing of fluids within outer ice layers, or through
Hannah E. Chinnery, Mark G. Fox‐Powell
wiley   +1 more source

Distinct Fracture Mineralogy That is Out of Equilibrium With Modern Groundwaters Provides Important Context for Subsurface Life

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 130, Issue 10, October 2025.
Abstract Rock fracture surfaces in the crust are essential habitat for microorganisms. Fracture‐groundwater interfaces provide physical substrates for biofilm growth and are sources of carbon, nutrients, and electron donors and acceptors. To better understand geochemical processes impacting fracture surfaces and the subsurface microbiome, we identified
Christopher J. Schuler   +5 more
wiley   +1 more source

Improving Dryland Depth to Water Table Estimate Using an Integrated Model With Three Submodels

open access: yesWater Resources Research, Volume 61, Issue 10, October 2025.
Abstract Investigating dryland phreatic water assets requires an in‐deep understanding of depth to water table (DWT). However, current DWT methods suffer from limited accuracy and demand refinement. Therefor, this study suggests one novel integrated model cascaded by twin, assimilation, and DWT submodels.
Shaohui Chen
wiley   +1 more source

Influence of Orbit and Mass Constraints on Reflected Light Characterization of Directly Imaged Rocky Exoplanets

open access: yesThe Astrophysical Journal Letters
Survey strategies for upcoming exoplanet direct imaging missions have considered varying assumptions of prior knowledge. Precursor radial velocity surveys could have detected nearby exo-Earths and provided prior orbit and mass constraints. Alternatively,
Arnaud Salvador   +3 more
doaj   +1 more source

Magmatic evolution and architecture of an oceanic intraplate volcano: Vesteris Seamount, Atlantic Ocean

open access: yesFrontiers in Earth Science
Vesteris is a large (33 × 27 km) and young (summit age: 0.65–0.010 Ma) intraplate seamount in the Greenland Sea, formed from ocean island basalt (OIB) magmatism.
L. Beloša   +7 more
doaj   +1 more source

Effects of Planetary Mass Uncertainties on the Interpretation of the Reflectance Spectra of Earth-like Exoplanets

open access: yesThe Astronomical Journal
Atmospheric characterization of Earth-like exoplanets through reflected light spectroscopy is a key goal for upcoming direct imaging missions. A critical challenge in this endeavor is the accurate determination of planetary mass, which may influence the ...
Mario Damiano   +4 more
doaj   +1 more source

Investigating the D" Reflector Beneath the Indian Ocean with Source Arrays

open access: yesSeismica
We used seismic P-wave reflections to search for the discontinuity at the top of the D" region beneath the Indian Ocean. Due to a lack of seismic receiver arrays to target this region, we build source arrays using earthquakes in Indonesia and taking ...
Christine Thomas   +3 more
doaj   +1 more source

The Vulcan Mission to Io: Lessons Learned during the 2022 JPL Planetary Science Summer School

open access: yesThe Planetary Science Journal
A mission to Jupiter's moon Io, the most volcanically active body in the solar system, was suggested as a priority for the New Frontiers program in the 2013 Planetary Science Decadal Survey.
K. G. Hanley   +20 more
doaj   +1 more source

Planetary Albedo Is Limited by the Above-cloud Atmosphere: Implications for Sub-Neptune Climates

open access: yesThe Astrophysical Journal
Energy limits that delineate the “habitable zone” for exoplanets depend on a given exoplanet’s net planetary albedo (or “Bond albedo”). We here demonstrate that the planetary albedo of an observed exoplanet is limited by the above-cloud atmosphere—the ...
Sean Jordan   +2 more
doaj   +1 more source

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