Results 11 to 20 of about 10,355 (259)
The Astrophysical JournalEnceladus exhibits some remarkable phenomena, including water geysers spraying through surface cracks, a global ice shell that is librating atop an ocean, a large luminosity, and rapid outward orbital migration.
Peter Goldreich +2 more
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Subsurface Life on Earth as a Key to Unlock Extraterrestrial Mysteries. [PDF]
Microb BiotechnolThis paper discusses current research on subsurface microbiology. Exploring Earth's deep and extreme subsurface environments provides critical insights into life's limits and adaptability. Subsurface exploration is not only vital for understanding the origins and limits of life on Earth, but also crucial for informing future missions in the search for ...
Vidal E +4 more
europepmc +2 more sources
Astrobiology eXploration at Enceladus (AXE): A New Frontiers Mission Concept Study
The Planetary Science Journal, 2023 The Saturnian moon Enceladus presents a unique opportunity to sample the contents of a subsurface liquid water ocean in situ via the continuous plume formed over its south polar terrain using a multi-flyby mission architecture.
K. Marshall Seaton +19 more
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Current understanding of electroautotrophy and its relevance in astrobiology-related research. [PDF]
mLifeAbstract Electroautotrophy—the use of extracellular electrons as the primary energy source for autotrophic metabolism—remains understudied compared to photoautotrophy and chemoautotrophy. Its occurrence in deep‐earth and deep‐sea environments suggests profound implications for astrobiology, yet electroautotrophic microorganisms remain poorly explored ...
Wang Q, Lau Vetter MCY.
europepmc +2 more sources
Scientific Reports, 2022 Lake Untersee located in Eastern Antarctica, is a perennially ice-covered lake. At the bottom of its southern basin lies 20 m of anoxic, methane rich, stratified water, making it a good analog for Enceladus, a moon of Saturn.
Nicole Yasmin Wagner +3 more
doaj +1 more source
A GLOBAL SHAPE MODEL FOR SATURN’S MOON ENCELADUS FROM A DENSE PHOTOGRAMMETRIC CONTROL NETWORK [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 A planetary body’s global shape provides both insight into its geologic evolution, and a key element of any Planetary Spatial Data Infrastructure (PSDI). NASA’s Cassini mission to Saturn acquired more than 600 moderate- to high-resolution images (<500
M. T. Bland +3 more
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Particle entrainment and rotating convection in Enceladus’ ocean
Communications Earth & Environment, 2023 Observations from Cassini have identified nanometer-sized silica grains in Saturn’s E-ring although their origin is unclear. Tidal deformation within Enceladus’ silicate core has been predicted to generate hot hydrothermal fluids that rise from the core ...
Ashley M. Schoenfeld +5 more
doaj +1 more source
Enceladus as a Potential Niche for Methanogens and Estimation of Its Biomass
Life, 2021 Enceladus is a potential target for future astrobiological missions. NASA’s Cassini spacecraft demonstrated that the Saturnian moon harbors a salty ocean beneath its icy crust and the existence and analysis of the plume suggest water–rock reactions ...
Laura I. Tenelanda-Osorio +3 more
doaj +1 more source
The Fall of a Giant. Chemical evolution of Enceladus, alias the Gaia Sausage [PDF]
, 2019 We present the first chemical evolution model for Enceladus, alias the Gaia Sausage, to investigate the star formation history of one of the most massive satellites accreted by the Milky Way during a major merger event.
Aguirre, Victor Silva +6 more
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Predicting the Effect of Surface Properties on Enceladus for Landing
The Planetary Science Journal, 2023 The prospect of landing on the surface of Enceladus comes with the question of whether the surface conditions permit selection and certification of one or more safe landing sites in an area of high science value.
John M. Harmon +3 more
doaj +1 more source