A5008882110- Astro and Planetary Science
- Planetary Science and Exploration
- Isotope Analysis in Ecology
- Stellar, planetary, and galactic studies
- Space Science and Extraterrestrial Life
- Gamma-ray bursts and supernovae
- Natural Language Processing Techniques
- Language and cultural evolution
- Astronomy and Astrophysical Research
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Astronomical Observations and Instrumentation
- Algorithms and Data Compression
- Geology and Paleoclimatology Research
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Atmospheric Ozone and Climate
- Space Exploration and Technology
- Global Energy and Sustainability Research
- Authorship Attribution and Profiling
- Astrophysics and Star Formation Studies
University of Arizona
2020-2024
Institut de Biologie de l'École Normale Supérieure
2021-2024
Éco-Anthropologie
2022
Université Paris Cité
2018-2022
Centre National de la Recherche Scientifique
2018-2022
Inserm
2022
Institut de Mécanique Céleste et de Calcul des Éphémérides
2022
Observatoire de Paris
2021
Structure et Instabilité des Génomes
2018
Titan has an organic-rich atmosphere and surface with a subsurface liquid water ocean that may represent habitable environment. In this work, we determined the amount of organic material can be delivered from Titan's to its through impact cratering. We assumed craters produce melt deposits composed founder in lower-density ice crust estimated molecules could incorporated into these lenses. used known yields for HCN haze hydrolysis determine glycine produced lenses found range possible flux...
Abstract The history of the Earth has been marked by major ecological transitions, driven metabolic innovation, that radically reshaped composition oceans and atmosphere. nature magnitude earliest hundreds million years before photosynthesis evolved, remain poorly understood. Using a novel ecosystem-planetary model, we find pre-photosynthetic methane-cycling microbial ecosystems are much less productive than previously thought. In spite their low productivity, evolution methanogenic...
Abstract Terrestrial planets in the habitable zone (HZ) of Sun-like stars are priority targets for detection and observation by next generation space telescopes. Earth's long-term habitability may have been tied to geological carbon cycle, a process critically facilitated plate tectonics. In modern Earth, motion corresponds mantle convection regime called mobile lid. The alternate, stagnant-lid is found on Mars Venus, which lacked strong enough weathering feedback sustain surface liquid...
Abstract Energy and nutrient sources for life could be delivered to Titan’s subsurface water ocean from both its surface above core below. Organic matter forming de novo in atmosphere depositing on the may hydrolyze upon descent into with impact-generated melt pools sinking through ice, adding a primordial inventory released by during differentiation and/or across geologic time. This raises possibility that abiotic organic carbon fuel heterotrophic assimilation biomass if it is inhabited....
Abstract Saturn's moon Enceladus is a top candidate in the search for extraterrestrial life our solar system. Ecological thermodynamic modeling of plume composition data collected by NASA's Cassini mission led to hypothesis that hydrogenotrophic methanogenic ecosystem might exist putative hydrothermal vents at Enceladus's seafloor. Here we extend this approach quantify ecosystem's expected biomass stock and production evaluate its detectability from collection material. We find although...
With thousands of exoplanets now identified, the characterization habitable planets and potential identification inhabited ones is a major challenge for coming decades. We review current working definition planets, upcoming observational prospects their present an innovative approach to assess habitability inhabitation. This integrated method couples first time atmosphere interior modeling with biological activity based on ecosystem modeling. here applications asses likelihood impact...
Terrestrial planets in the Habitable Zone of Sun-like stars are priority targets for detection and observation by next generation powerful space telescopes. Earth's long-term habitability may have been tied to geological carbon cycle, a process critically facilitated plate tectonics. In modern Earth, motion corresponds mantle convection regime called mobile-lid. The alternate, stagnant-lid is found on Mars Venus, which lacked strong enough weathering feedbacks sustain surface liquid water...
Studying planetary habitability has become a major emerging research area, with critical implications for future exoplanet exploration and ambitious ground- space-based telescopes. Efforts to design optimize these missions have been focusing on maximizing the planet yield – number of exoplanets survey will be able characterize which is not necessarily equivalent science return. We present Bioverse, framework quantify diagnostic power nextgeneration surveys Bioverse allows assess...
Abstract Historical linguistics strongly benefited from recent methodological advances inspired by phylogenetics. Nevertheless, no available method uses contemporaneous within-population linguistic diversity to reconstruct the history of human populations. Here, we developed an approach population genetics perform historical inferences data sampled at individual scale, within a population. We built four demographic models transmission over generations, each differing number teachers involved...
Abstract Historical linguistics strongly benefited from recent methodological advances inspired by phylogenetics. Nevertheless, no available method uses contemporaneous within-population linguistic diversity to reconstruct the history of human populations. Here, we developed an approach population genetics perform historical inferences data sampled at individual scale, within a population. We built four demographic models transmission over generations, each differing number teachers involved...