June 2025 – Page 21 – My WordPress Site

An artist’s rendering of the warm exoplanet WASP-80 b and an overview of its planet-system parameters. Planet image credit: NASA/Ames Research Center. astro-ph.EP

Astrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy

A Precise Metallicity and Carbon-to-Oxygen Ratio for a Warm Giant Exoplanet from its Panchromatic JWST Emission Spectrum

by Keith CowingJune 5, 2025June 5, 2025

Telluric-corrected HARPS observations at the sodium doublet, obtained on two nights nearly one year apart, vertically offset for clarity. In both nights, significant disk line absorption is visible, as well as red-shifted lines attributed to a form of exocomet activity. Labels in black indicate the nights of observation, the number of spectra taken and the total exposure time. The night-average spectrum prior to telluric correction is over-plotted in orange, demonstrating the relative positions of the telluric water lines. -- astro-ph.EP

Astrochemistry, Beta Pictoris, Biochemistry & Organic Chemistry, Comets and Asteroids, Exoplanets, -moons, -comets, Imaging & Spectroscopy

Exocomets of Beta Pictoris I: Exocomet destruction, sodium and disk line variability in 17 years of HARPS observations

by Keith CowingJune 5, 2025June 5, 2025

The sector-to-sector undetrended PDCSAP light curves of TOI-2285 binned by 30 minutes. The sector number is indicated on the left. The locations of even- and odd-number transits of TOI-2285 b are marked by orange and green, respectively, with transit epochs labeled. The locations of the transits of TOI-2285.02 are marked by blue. -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy

Hidden Transits: TOI-2285 b is a Warmer sub-Neptune Likely with a Super-Earth Companion

by Keith CowingJune 5, 2025June 5, 2025

ASGSR 2025

Astrobiology (general), Conferences and Meetings, Microbiology & Virology, Microgravity, Plant Biology, Space Agriculture, Space Life Science, Space Physiology & Medicine, Space Stations

American Society for Gravitational and Space Research ASGSR 2025 Call for Abstracts

by Keith CowingJune 5, 2025June 5, 2025

A human astronaut under some form of deep sleep or "suspended animation" -- Grok via Astrobiology.com

Life Support Systems, Space Physiology & Medicine

Adapting Human Physiology To Long-Term Space Missions

by Keith CowingJune 4, 2025September 18, 2025

Early Earth -- Grok via Astrobiology.com

Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Extremeophiles and Extreme Environments, Origin & Evolution of Life

Biological, Equilibrium and Photochemical Signatures of C, N and S Isotopes in the Early Earth and Exoplanet Atmospheres

by Keith CowingJune 4, 2025June 4, 2025

Shifting distributions of genera within functional groups and their phylogenetic underpinnings among the end-Cretaceous, survival pool, and Recent biotas. (A) Changes in absolute richness of genera within functional groups between the end-Cretaceous biota, the survivor pool, and today. Warmer colors indicate higher genus richness. Mixing of the color gradient in the survivor pool and Recent biota indicates shifts in the richness rank order of functional groups. (B) Phylogenetic underpinnings of functional group composition for the end-Cretaceous and Recent biotas. The proportion of genera in a functional group per family is reflected by the widths of ribbons connecting the tips of the family-level phylogeny to functional groups. The middle panel shows the proportional changes in genus richness of functional groups among taxon sets. The connections between the taxon sets are to visualize shifts in the rank order of functional groups and do not imply smooth transitions between them. -- Science Advances

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Extinction events, Fossils & Paleontology, Gaia - Planetary Perspectives, Habitable Zones, Impact events, Mapping, Geodesy, Cartography, Origin & Evolution of Life, Water/Hycean Worlds & Oceanography

How Does Life Rebound From Mass Extinctions?

by Keith CowingJune 4, 2025June 4, 2025

Diatoms - JOIDES Resolution

Biosignatures & Paleobiology, Fossils & Paleontology, Microbiology & Virology, Nomenclature, Systematics, Natural History, Origin & Evolution of Life, Plant Biology, ROVs/Submersibles/Diving, Sample Return, Water/Hycean Worlds & Oceanography

Study Resolves The Diatom Tree Of Life

by Keith CowingJune 4, 2025June 6, 2025

Example of spoken English exhibiting dense spectral energy across a wide frequency range, reflecting typical characteristics of natural speech. -- astro-ph.IM

AI - Data - Apps - Cybernetics, Intelligence & Language, SETI & Technosignatures

An Exploratory Framework for Future SETI Applications: Detecting Generative Reactivity via Language Models

by Keith CowingJune 4, 2025June 4, 2025

Comparison between the database EHS masses with recomputed values adopting the database stellar radii and surface gravities (see text for details). The grey dotted line is the (1:1)-relation. If the database were fully consistent, all points would lie on this diagonal line. The most massive EHS are not shown for clarity reasons. -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Interstellar, Stellar Cartography

The Gaia Spectroscopic Catalogue Of Exoplanets And Host Stars

by Keith CowingJune 4, 2025June 4, 2025