December 2025 – Page 23 – My WordPress Site

Cores of lava breccia, cemented with white calcium carbonate minerals, recovered from IODP Site U1557 Credit IODP JRSO

Astrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, ROVs/Submersibles/Diving, Sample Return

Ancient Rocks Reveal Themselves As Carbon Sponges

by Keith CowingDecember 1, 2025December 1, 2025

Key Martian stressors (e.g., UV radiation, extreme dryness, oxidizing conditions, methane release) -- Nature communications biology

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Desert Worlds, Habitable Zones, Icy Worlds, Mars, Microbiology & Virology, Terraforming & Geoengineering

The Role Of Extremophile Microbiomes In Terraforming Mars

by Keith CowingDecember 1, 2025December 1, 2025

Refractory ratio of stars compared to their exoplanets as populations. The host stars population is shown in red at contours of 1 and 2 σ values, while the dotted contour corresponds to the GALAH stellar population. The marginal distribution of Fe/Mg and Fe/Si are shown outside of the scatter plot for stars (red), all exoplanets (blue) and GALAH (dotted) populations. Exoplanets above the RTR, which require volatiles, are indicated as white circles and solar system objects are shown in yellow. Notice the axes are in logarithmic scale. -- astro-ph.EP

Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets

Evidence Of 1:1 Slope Between Rocky Super-Earths And Their Host Stars

by Keith CowingDecember 1, 2025December 1, 2025

Average difference (D ¯) between models and observations over model time (x-axis) and model density (y-axis) for the seven objects except the last panel which is for the determined best values for the objects.

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Imaging & Spectroscopy, Interstellar

The Role Of Polycyclic Aromatic Hydrocarbons In Astrochemical Modeling At Different Evolutionary Stages Of Cold Dense Cloud Cores

by Keith CowingDecember 1, 2025December 1, 2025