Ocean worlds in the outer solar system

F Nimmo, RT Pappalardo - Journal of Geophysical Research …, 2016 - Wiley Online Library
Many outer solar system bodies are thought to harbor liquid water oceans beneath their ice
shells. This article first reviews how such oceans are detected. We then discuss how they …

MASPEX-Europa: the Europa Clipper neutral gas mass spectrometer investigation

JH Waite Jr, JL Burch, TG Brockwell, DT Young… - Space Science …, 2024 - Springer
Abstract The MAss Spectrometer for Planetary EXploration (MASPEX) is a high-mass-
resolution, high-sensitivity, multi-bounce time-of-flight mass spectrometer (MBTOF) capable …

The pH of Enceladus' ocean

CR Glein, JA Baross, JH Waite Jr - Geochimica et Cosmochimica Acta, 2015 - Elsevier
Saturn's moon, Enceladus, is a geologically active waterworld. The prevailing paradigm is
that there is a subsurface ocean that erupts to the surface, which leads to the formation of a …

Geophysical investigations of habitability in ice‐covered ocean worlds

SD Vance, MP Panning, S Stähler… - Journal of …, 2018 - Wiley Online Library
Geophysical measurements can reveal the structures and thermal states of icy ocean
worlds. The interior density, temperature, sound speed, and electrical conductivity thus …

Exploring the interior of Europa with the Europa Clipper

JH Roberts, WB McKinnon, CM Elder, G Tobie… - Space Science …, 2023 - Springer
Abstract The Galileo mission to Jupiter revealed that Europa is an ocean world. The Galileo
magnetometer experiment in particular provided strong evidence for a salty subsurface …

Exploring the composition of Europa with the upcoming Europa Clipper mission

TM Becker, MY Zolotov, MS Gudipati… - Space Science …, 2024 - Springer
Jupiter's icy moon, Europa, harbors a subsurface liquid water ocean; the prospect of this
ocean being habitable motivates further exploration of the moon with the upcoming NASA …

Multiplication of microbes below 0.690 water activity: implications for terrestrial and extraterrestrial life

A Stevenson, J Burkhardt, CS Cockell… - Environmental …, 2015 - Wiley Online Library
Since a key requirement of known life forms is available water (water activity; aw), recent
searches for signatures of past life in terrestrial and extraterrestrial environments have …

Large ocean worlds with high-pressure ices

B Journaux, K Kalousová, C Sotin, G Tobie… - Space Science …, 2020 - Springer
Pressures in the hydrospheres of large ocean worlds extend to ranges exceeding those in
Earth deepest oceans. In this regime, dense water ices and other high-pressure phases …

Mass spectrometric fingerprints of organic compounds in sulfate-rich ice grains: Implications for Europa Clipper

M Napoleoni, F Klenner, L Hortal Sánchez… - ACS Earth and Space …, 2023 - ACS Publications
The surface ice of Europa is known to contain high proportions of inorganic material that
could heavily influence the compositional analysis of organic compounds in ejecta ice …

Holistic approach for studying planetary hydrospheres: Gibbs representation of ices thermodynamics, elasticity, and the water phase diagram to 2,300 MPa

B Journaux, JM Brown, A Pakhomova… - Journal of …, 2020 - Wiley Online Library
Gibbs energy representations for ices II, III, V, and VI are reported. These were constructed
using new measurements of volumes at high pressure over a range of low temperatures …