Results 51 to 60 of about 82,988 (172)

A Theory for the Global Wind Energy Dissipation Across Climates

open access: yesAGU Advances, Volume 7, Issue 5, August 2026.
Abstract Atmospheric winds play a key role in shaping climate, ecosystems, and infrastructure. The energy that drives the winds is generated by the atmospheric heat engine. However, traditional entropy‐budget descriptions of this heat engine rely on poorly constrained microscale processes, limiting their predictive power.
Malte F. Jansen   +2 more
wiley   +1 more source

Abiotic ozone and oxygen in atmospheres similar to prebiotic earth [PDF]

open access: yes, 2014
The search for life on planets outside our solar system will use spectroscopic identification of atmospheric biosignatures. The most robust remotely detectable potential biosignature is considered to be the detection of oxygen (O2) or ozone (O3 ...
Domagal-Goldman, Shawn D.   +9 more
core   +1 more source

Determining the Detectability of H2O with Photometric Observations Using Bayesian Analysis for Remote Biosignature Identification on exo-Earths (BARBIE)

open access: yesThe Astronomical Journal
We examine the detectability of water (H _2 O) in the reflected-light spectrum of an Earth-like exoplanet assuming a photometric observational approach rather than spectroscopic. By quantifying the detectability as a function of normalized exposure time,
Natasha Latouf   +3 more
doaj   +1 more source

Clouds in Partial Atmospheres of Lava Planets and Where to Find Them

open access: yesThe Astronomical Journal
With dayside temperatures hot enough to sustain a magma ocean and a silicate atmosphere, lava planets are the best targets for studying the atmosphere of a rocky world.
T. Giang Nguyen   +2 more
doaj   +1 more source

The Complexity of Deep Aqueous Fluids in Planetary Ultramafic Mantles

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Planetary volatiles cycle through a planet's crust, mantle, and atmosphere, playing a crucial role in surface processes and habitability. Discussions of planetary volatiles traditionally focus on water, carbon, nitrogen, and sulfur, but fluids in contact with silicate rocks and ultramafic mantles can contain significant amounts of magnesium ...
Sophia E. Economon   +1 more
wiley   +1 more source

Observations of Exoplanet Atmospheres and Surrounding Environments

open access: yes, 2014
The study of exoplanets is arguably the most exciting and fastest-growing field in astrophysics. Given the youth of exoplanet science, the field is strongly driven by observations.
Kristina G. Kislyakova   +7 more
core   +1 more source

Interactions of Sublimated Frost With Volcanic Plumes: Modeling Io's SO2 Atmosphere Using the DSMC Method

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Io's tenuous atmosphere consists primarily of sulfur dioxide (SO2 ${\text{SO}}_{2}$) with observed column densities of approximately 1016−1017 $1{0}^{16}-1{0}^{17}$ cm−2 ${\text{cm}}^{-2}$. However, it remains uncertain whether the sublimation of SO2 ${\text{SO}}_{2}$ surface frost or volcanic outgassing is the primary source of the SO2 ...
Leander Schlarmann   +4 more
wiley   +1 more source

Weakening Tropical West Pacific Ascent Strength Reduces East Pacific Low Clouds via Lower Free‐Tropospheric Moisture Convergence

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract Low clouds (LC) are the largest source of uncertainty in the climate response to increased CO2 ${\text{CO}}_{2}$ in global climate models. This is due to the multitude of factors that affect their behavior and how these are characterized across models.
Danny McCulloch   +3 more
wiley   +1 more source

Out There No One Has a Right to Die

open access: yesBioethics, Volume 40, Issue 6, Page 565-572, July 2026.
ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley   +1 more source

Searching for Neutral Hydrogen Escape from the 120 Myr Old Sub-Neptune HIP94235b using HST

open access: yesThe Astronomical Journal
HIP94235 b, a 120 Myr old sub-Neptune, provides us the unique opportunity to study mass loss at a pivotal stage of the system’s evolution: the end of a 100 Myr old phase of intense XUV irradiation.
Ava Morrissey   +11 more
doaj   +1 more source

Home - About - Disclaimer - Privacy