Results 31 to 40 of about 8,181 (297)
Icy Exomoons Evidenced by Spallogenic Nuclides in Polluted White Dwarfs [PDF]
ApJL 907 L35 (2021), 2021 We present evidence that excesses in Be in polluted white dwarfs (WDs) are the result of accretion of icy exomoons that formed in the radiation belts of giant exoplanets. Here we use excess Be in the white dwarf GALEX J2339-0424 as an example. We constrain the parent body abundances of rock-forming elements in GALEX J2339-0424 and show that the ...
arxiv +1 more source
Microbial Diversity and Biosignatures: An Icy Moons Perspective [PDF]
Space Science Reviews, 2020 The icy moons of the outer Solar System harbor potentially habitable environments for life, however, compared to the terrestrial biosphere, these environments are characterized by extremes in temperature, pressure, pH, and other physico-chemical conditions.
Barbara Cavalazzi +7 more
openaire +4 more sources
Plume Sample Modification at Icy Moons: Implications for Biosignatures
Frontiers in Astronomy and Space Sciences, 2020 Water from the plumes of icy moons is a potential sampling target that may preserve the aqueous chemistry of the interior oceans, as well as organics and other biosignatures or prebiotic chemical precursors.
Matthew A. Pasek
doaj +1 more source
Exosomal circNFIX promotes angiogenesis in ovarian cancer via miR‐518a‐3p/TRIM44 axis
The Kaohsiung Journal of Medical Sciences, Volume 39, Issue 1, Page 26-39, January 2023., 2023 Abstract Ovarian cancer (OC) is a gynecological cancer with high mortality. OC‐derived exosomal circRNAs can regulate angiogenesis. This study aims to explore the role and mechanism of exosomal circRNA nuclear factor I X (CircNFIX) derived from OC cells in angiogenesis.
Hui Ye +7 more
wiley +1 more source
A multi-lander New Frontiers mission concept study for Enceladus: SILENUS
Frontiers in Astronomy and Space Sciences, 2022 Enceladus, with its subsurface ocean, is amongst the top priority targets in the search for life beyond Earth. Following on discoveries from the Cassini mission that Enceladus possesses a global subsurface ocean containing salt and organic compounds ...
Erica Nathan +11 more
doaj +1 more source
The thermal emission of Saturn’s icy moons [PDF]
Astronomy & Astrophysics, 2021 Context.The effects of space weathering and other alteration processes on the upper surface of Saturn’s icy moons are yet to be explored.Aims.We present a thermophysical model parametrised by way of regolith properties such as porosity, grain size, and composition, as well as the local topography.
Ferrari, C., Lucas, A., Jacquemoud, S.
openaire +3 more sources
Managerial and Decision Economics, Volume 44, Issue 1, Page 336-358, January 2023., 2023 Abstract The efficiency associated with innovation has been a frequently considered element in the literature. However, the conceptualization of this efficiency and its management is an underexplored factor. We study the way in which the different elements that conform to this efficiency are managed over time.
Concepción Rubio‐Picón +3 more
wiley +1 more source
Prospects for Cryovolcanic Activity on Cold Ocean Planets
The Astrophysical Journal, 2023 We have estimated total internal heating rates and depths to possible subsurface oceans for 17 planets that may be cold ocean planets, low-mass exoplanets with equilibrium surface temperatures and/or densities that are consistent with icy surfaces and a ...
Lynnae C. Quick +4 more
doaj +1 more source
The subsurface habitability of small, icy exomoons [PDF]
A&A 636, A50 (2020), 2020 Assuming our Solar System as typical, exomoons may outnumber exoplanets. If their habitability fraction is similar, they would thus constitute the largest portion of habitable real estate in the Universe. Icy moons in our Solar System, such as Europa and Enceladus, have already been shown to possess liquid water, a prerequisite for life on Earth.
arxiv +1 more source
Can large icy moons accrete undifferentiated? [PDF]
Icarus, 2014 The apparent moments of inertia of Callisto and Titan inferred from gravity data suggest incomplete differentiation of their interior, commonly attributed to slow and cold accretion. To understand whether such large icy moons can really avoid global melting and subsequent differentiation during their accretion, we have developed a 3D numerical model ...
Monteux, Julien +3 more
openaire +5 more sources