Most modern atmospheric retrievals adopt the simplifying assumption that the planetary atmosphere endures no planetary rotation and stellar tidal effect.
Status Report
Posted inAstrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Ice Giant, Lava / magma ocean / Volcanic Worlds, Neptune, Status Report, Uranus, Water/Hycean Worlds & Oceanography
Ice Giants Revisited: Uranus And Neptune As Magma Ocean Worlds
Uranus and Neptune are commonly interpreted as volatile-rich “ice giants”, an assumption that underpins most interior models.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report
PAHSPECS: Polycyclic Aromatic Hydrocarbon Properties At Cosmic Noon With JWST/MIRI MRS
Context. Cosmic noon (z ~ 1-3) marks the peak of the cosmic star-formation rate density, when dust-obscured star formation dominated galaxy growth. Mid-infrared spectroscopy probes the interstellar medium through PAH […]
![PAH ratio maps for the five PAHSPECS galaxies. We only show pixels that have a > 3σ measurement of the ratio. The left column shows NIRCAM color images using the F090W, F200W, F444W filters (M. J. Rieke et al. 2023). The second column shows the PAH6.2/PAH7.7 ratio. The third column shows the PAH11.3/PAH7.7 ratios. The fourth column shows the PAH3.3/PAH11.3 ratios. The final column shows [ArII]/PAH6.2. -- astro-ph.GA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/06/PAHSPECS-Spatially-Resolved-PAH.png?resize=1200%2C716&ssl=1)
Posted inAstrochemistry, Astronomy & Telescopes, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report
PAHSPECS: Spatially Resolved PAH Spectroscopy At Cosmic Noon With JWST MIRI MRS
We present spatially resolved spectroscopy with JWST/MIRI MRS of a representative sample of normal star-forming galaxies at z∼1.1 as part of the PAHSPECS program.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Status Report, Venus
Acidophilic Fungi As Possible Candidates For Living Forms In Venus’ Clouds
Present-day Venus, similar to Earth in terms of relative radius, acceleration of gravity and mean density, is characterised by a very strong greenhouse effect and full cloud cover.
Posted inAnalog Studies, Astronauts and Explorers, Away Teams & Field Reports, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Exploration Gear & Tech, Mapping, Geodesy, Cartography, Bathymetry, Sample Return, Status Report
Away Team Training: ESA CAVES 2025 Underground Campsite At Abel Cave
A view of the kitchen area at the Abel Cave campsite, where the ESA CAVES 2025 course crew and support team are staying.
Posted inMars, Missions & Hardware, Policy, Reports, Roadmaps, & Plans, Status Report
Mars Exploration Program Analysis Group (MEPAG) Memo On NASA’s Mars Exploration Program Budget
Members of the MEPAG (Mars Exploration Program Analysis Group) community, There have been deeply concerning developments in the NASA MEP budget and proposed federal R&A funding policy in the last […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Conferences and Meetings, Status Report, Video, Audio, Webcasts, Podcasts
2026 LIFE NASA RCN Seminar: Geochemistry Compels Biochemistry
Time: June 18th, 8 AM PDT/11 AM EDT
Posted inNews Summary Archives, Status Report
Hot life in Antarctica: A Novel Metabolically Versatile Pyrodictiaceae Genus Thriving At A Volcanic–cryosphere–marine Interface
Deception Island fumaroles in Antarctica represent rare environments where extreme heat intersects with cryospheric and marine conditions, creating remarkable environmental gradients.
Posted inCareer Opportunities, Conferences and Meetings, Education and Outreach, Status Report
Registrations Open For AbGradEPEC’26
Dear friends of AbGradE, we’re excited to announce that registrations are now open for AbGradEPEC’26, our upcoming event organised in collaboration with the Europlanet Early Career Network (EPEC).