With a new probabilistic technique for sampling interstellar object (ISO) orbits with high efficiency, we assess the observability of ISOs under a realistic cadence for the upcoming Vera Rubin Observatory’s […]
astro-ph.EP]
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Astrogeology, Europa, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Status Report
Rapid Hydrofracture of Icy Moon Shells: Insights From Glaciology
Europa’s surface exhibits many regions of complex topography termed ‘chaos terrains’. One set of hypotheses for chaos terrain formation requires upward migration of liquid water from perched water bodies within […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Effects of Planetary Mass Uncertainties on the Interpretation of the Reflectance Spectra of Earth-like Exoplanets
Atmospheric characterization of Earth-like exoplanets through reflected light spectroscopy is a key goal for upcoming direct imaging missions. A critical challenge in this endeavor is the accurate determination of planetary […]
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Status Report, Terraforming & Geoengineering, Water/Hycean Worlds & Oceanography
Eta-Earth Revisited I: A Formula for Estimating the Maximum Number of Earth-like Habitats
In this hypothesis article, we discuss the basic requirements of planetary environments where aerobe organisms can grow and survive, including atmospheric limitations of millimeter-to-meter-sized biological animal life based on physical […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Exoplanet Ephemerides Change Observations (ExoEcho). I. Transit Timing Analysis of Thirty-Seven Exoplanets using HST/WFC3 Data
The ExoEcho project is designed to study the photodynamics of exoplanets by leveraging high-precision transit timing data from ground- and space-based telescopes.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Habitable Zones, Microbiology & Virology, Status Report, Water/Hycean Worlds & Oceanography
The Role Of Atmospheric Composition In Defining The Habitable Zone Limits And Supporting E. coli Growth
Studying exoplanet atmospheres is essential for assessing their potential to host liquid water and their capacity to support life (their habitability).
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Status Report
Characterization of Seven Transiting Systems Including Four Warm Jupiters From SOPHIE and TESS
We present the study of seven systems, three of which TOI-2295, TOI-2537, and TOI-5110 are newly discovered planetary systems.
Posted inComets and Asteroids, Panspermia, Status Report
He Awa Whiria: The Tidal Streams of Interstellar Objects
Upcoming surveys are likely to discover a new sample of interstellar objects (ISOs) within the Solar System, but questions remain about the origin and distribution of this population within the […]
![Spectral flux contributions over the range [1, 25] µm for a surface temperature of (Top) 250 K and (Bottom) 650 K. The white lines delineate the areas where the CFF per spectral band is higher than unity. The spectral range of LIFE and the vertical extent of the cloud are overplotted. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/11/The-Impact-Of-Water-Clouds-On.png?resize=1200%2C716&ssl=1)
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
The Impact Of Water Clouds On The Prospective Emission Spectrum Of Teegarden’s Star b As Observed By LIFE
Non-transiting terrestrial planets will be accessible by upcoming observatories of which LIFE is an example.
Posted inAstrogeology, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Status Report, TRAPPIST-1
On The Local Formation Of The TRAPPIST-1 Exoplanets
The discovery of seven ~Earth-mass planets, orbiting the 0.09 solar mass M-Dwarf TRAPPIST-1 captivated the public and sparked a proliferation of investigations into the system’s origins. Among other properties, the […]