Results 61 to 70 of about 4,846 (203)

Entering the Era of Directly Supporting Society With Observation‐Based Ocean Acidification Data

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract Ocean acidification is a growing concern for many nations around the world. However, our capacity to monitor changes in carbonate chemistry with sufficient spatial and temporal resolution, has until now, been limited, which has impeded effective action and decision‐making at international, national, and regional levels.
Helen S. Findlay, Lucile Gaultier, Luke Gregor, Nicolas Gruber, Peter Land, Daniel Ford, Roberto Sabia, Aleluia Taise‐Uili, Stephen Widdicombe, Jan Newton, Kaitlyn Lowder, Jamie Shutler   +11 more
wiley   +1 more source

Atmospheric C/O Ratios of Sub-Neptunes with Magma Oceans: Homemade rather than Inherited

The Astrophysical Journal Letters
Recently, the James Webb Space Telescope has enabled detailed spectroscopic characterization of sub-Neptune atmospheres. With detections of carbon- and oxygen-bearing species such as CO, CO _2 , CH _4 , and H _2 O, a central question is whether the ...
Aaron Werlen, Caroline Dorn, Hilke E. Schlichting, Simon L. Grimm, Edward D. Young   +4 more
doaj   +1 more source

Ground‐Based Validation of Hera's Spacecraft Monitoring Camera

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract Hera is an ESA contribution to the international planetary defense effort. It is a deep‐space mission to the binary asteroid system Didymos and Dimorphos, designed to investigate the effects of NASA's Double Asteroid Redirection Test (DART), demonstrate autonomous navigation, and support close‐proximity investigation by two CubeSats.
D. T. Lakey, A. Schiavo, C. Guerbuez
wiley   +1 more source

Linear Thermal Instability of a Condensing Gas–Particle Mixture, with Possible Application to Chondrites and Planetesimals

The Astrophysical Journal
We study the stability of a hot saturated gas coexisting with condensed particles in an optically thin medium. Such a situation may be obtained downstream of a shock, at condensation fronts, or in vaporizing impacts. We show that the gas–particle mixture
Kecheng Stephon Qian, Eugene Chiang
doaj   +1 more source

Episode 9 Transcript: Habitability Beyond Earth [PDF]

In this episode, we’re joined by Dr. Stephen Kane, Professor of Planetary Astrophysics at UC Riverside and Director of the Planetary Research Laboratory.
Han, Jing
core  

Laboratory astrophysics : investigation of planetary and astrophysical maser emission [PDF]

, 2013
This paper describes a model for cyclotron maser emission applicable to planetary auroral radio emission, the stars UV Ceti and CU Virginus, blazar jets and astrophysical shocks.
Ronald K, Phelps, A.D.R., Phelps, Alan, Kellett BJ, McConville SL, Phelps ADR, Speirs DC, Ronald, Kevin, McConville, S.L., Cross, Adrian, Cairns RA, Speirs, D.C., Cairns, R Alan, Cross, A.W., Cross AW, Kellett, Barry, McConville, Sandra, Cairns, R.A., Bingham, Robert, Vorgul I, Vorgul, Irena, Kellett, B.J., Ronald, K., Bingham R, Spiers DC, Vorgul, I., Speirs, David, Bingham, R., K. Ronald, B. J. Kellett, R. Bingham, A. W. Cross, S. L. McConville, I. Vorgul, D. C. Speirs, R. A. Cairns, A. D. R. Phelps   +36 more
core   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki, Michael E. Jackson, Glen S. Mattioli, David J. Mencin, Karl Feaux, Donna J. Charlevoix   +5 more
wiley   +1 more source

Chemical and Dynamical Processes in the Atmospheres of I. Ancient and Present-Day Earth, II. Jupiter and Galileo Satellite, III. Extrasolar “Hot Jupiters” [PDF]

, 2006
When exposed to stellar UV radiation, chemical processes will be governed not only by temperature/pressure but also the spectrum of the incoming dissociative photon flux; the system will approach kinetic, or photochemical, equilibrium, instead of ...
Liang, Mao-Chang
core   +1 more source

The Earth's Greatest Porous Media

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract How deeply does modern meteoric water circulate into the continental crust? How deep is the Earth's Critical Zone (CZ), the top layer of the continental lithosphere that co‐evolves with the atmosphere, hydrosphere, and biosphere, extending from vegetation canopy down to fresh bedrock and the base of active groundwater circulation?
Ying Fan, William E. Dietrich, Jérôme Gaillardet, Steve E. Ingebritsen   +3 more
wiley   +1 more source

Computing phase diagrams using a convex hull algorithm

Astronomy & Astrophysics
We present a simple universal computational algorithm for computing compositional phase diagrams of rocks and their melts at a given temperature and pressure.
Dullemond C. P., Young E. D.
doaj   +1 more source