Results 101 to 110 of about 7,946 (214)

Evidence for multiple crossings and stripping of Gaia-Enceladus/Sausage across the Milky Way

Astronomy & Astrophysics
Context. The accretion of Gaia-Enceladus/Sausage (GES) onto the Milky Way (MW) is one of the most prominent features of the Galactic halo revealed by the combination of the Gaia satellite and large spectroscopic surveys.
Berni L., Palla M., Magrini L., Spina L.
doaj   +1 more source

The Role of Ejecta in the Small Crater Populations on the Mid-Sized Saturnian Satellites

, 2011
We find evidence that crater ejecta play an important role in the small crater populations on the Saturnian satellites, and more broadly, on cratered surfaces throughout the Solar System. We measure crater populations in Cassini images of Enceladus, Rhea,
Alvarellos, Alvarellos, Alvarellos, Bart, Bierhaus, Bierhaus, Bierhaus, Bottke, Burns, Cintala, Crater Analysis Techniques Working Group, Davies, Dobrovolskis, Dundas, Durham, Edward B. Bierhaus, Giese, Hartmann, Horedt, Horedt, Housen, José Luis Alvarellos, Kempf, Kevin Zahnle, Kirchoff, Kirchoff, Levison, Lissauer, Lorenz, Luke Dones, Marchi, McEwen, McEwen, Melosh, Moore, Neish, Neukum, Plescia, Plescia, Plescia, Porco, Porco, Preblich, Richardson, Robbins, Schenk, Schenk, Schmidt, Schubert, Schultz, Smith, Smith, Snodgrass, Stern, Thomas, Vickery, Weiler, Wood, Zahnle, Zahnle, Zahnle, Zahnle   +61 more
core   +1 more source

Impacts on Ocean Worlds Are Sufficiently Frequent and Energetic to Be of Astrobiological Importance

The Planetary Science Journal
Evidence for the beneficial role of impacts in the creation of urable or habitable environments on Earth prompts the question of whether meteorite impacts could play a similar role at other potentially urable/habitable worlds like Enceladus, Europa, and ...
Shannon M. MacKenzie, Alexandra Pontefract, R. Terik Daly, Jacob J. Buffo, Gordon R. Osinski, Christopher J. Cline II, Mark J. Cintala, Kathleen L. Craft, Mallory J. Kinczyk, Joshua Hedgepeth, Sarah M. Hörst, Abel Méndez, Ben K. D. Pearce, Angela M. Stickle, Steven D. Vance   +14 more
doaj   +1 more source

A Potential Mushy Source for the Geysers of Enceladus and Other Icy Satellites

Geophysical Research Letters
Enceladus is a target for astrobiology due to the H2O plume ejecta measured by the Cassini spacecraft and the inferred subsurface ocean that could be the source of the geysers.
Colin R. Meyer, Jacob J. Buffo, Francis Nimmo, Andrew J. Wells, Samuel Boury, Mark Fox‐Powell, Tara C. Tomlinson, Jamie R. G. Parkinson, Geoffrey M. Vasil   +8 more
doaj   +1 more source

The two faces of Gaia-Sausage-Enceladus

Astronomy & Astrophysics
Aims. Recent studies suggest that chemical abundances hold the key to disentangling halo substructures, providing a more reliable tracer than dynamics alone. We aim to probe the Milky Way stellar halo using high-dimensional chemical abundances from GALAH
Quandt-Rodriguez Milan, Lucatello Sara, Spina Lorenzo, Pasquato Mario, Canducci Marco   +4 more
doaj   +1 more source

Enceladus: Astrobiology Revisited

Journal of Geophysical Research: Biogeosciences
AbstractAstrobiology research seeks to understand how life begins and evolves, and to determine whether life exist elsewhere in the universe. The discovery of diverse ocean worlds has significantly expanded the number of planetary bodies in the Solar System that could potentially contain life.
A. F. Davila, J. L. Eigenbrode
openaire   +1 more source

Raman Spectroscopy of Salt Deposits from the Simulated Subsurface Ocean of Enceladus

The Planetary Science Journal
Enceladus may host a subsurface ocean with biologically relevant chemistry. Plumes released from this ocean preserve information on its chemical state, and previous analyses suggest weakly to strongly alkaline pH.
Jun Takeshita, Yuichiro Cho, Haruhisa Tabata, Yoshio Takahashi, Daigo Shoji, Seiji Sugita   +5 more
doaj   +1 more source

Enough Sulfur and Iron for Potential Life Make Enceladus’s Ocean Fully Habitable

The Astrophysical Journal Letters
The Cassini spacecraft revealed life-forming elements like CHNOP and diverse organic compounds from Enceladus’s ocean. However, the availability of minor but bio-essential nutrients such as iron and sulfur remains unknown.
Weiming Xu, Can Liu, Ao Zhang, Maggie Lau, H. James Cleaves, Fang Huang, Christopher R. Glein, Jihua Hao   +7 more
doaj   +1 more source

Enceladus Farm: Can plants grow with Enceladus' water? (Preliminary Report)

, 2020
12 pages, 7 figures, Preliminary results.
openaire   +2 more sources

Improving Porosity Calculation Methods and Proposing a New Model Universally Applicable to Large- and Medium-sized Planetary Objects

The Astrophysical Journal
Our work was aimed at the improvement of two main already existing methods of porosity calculation on a planetary scale in order to expand these methods to be applicable to exoplanetary interiors. In addition to implementing some improvements in the used
Imre Kisvárdai, Ákos Kereszturi
doaj   +1 more source