![Probability distribution functions (PDFs) for the chemical abundances used to sample the stellar properties in our dataset,with lighter colors indicating higher probability densities. Left panel: PDF of [C/Fe] versus [Fe/H]. Right panel: PDF of [α/Fe] versus [Fe/H]. In both panels, the pink contours show the abundance distributions of halo stars from the APOGEE survey, as provided by the astroNN catalog. APOGEE does not reach the lowest metallicities present in our simulated dataset, which explains the differences at low [Fe/H]. -- astro-ph.SR](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/01/Towards-Model-free.png?resize=1200%2C723&ssl=1)
Chemical abundance determinations from stellar spectra are challenged by observational noise, limitations in stellar models, and departures from simplifying assumptions.
Editor’s note: If we aspire to mount expeditions to new worlds and then embrace the task of characterizing and quantifying whatever life forms we find, the ability to map and […]
This study explores the application of autoencoder-based machine learning techniques for anomaly detection to identify exoplanet atmospheres with unconventional chemical signatures using a low-dimensional data representation.
Microscopic detection and enumeration of microbial biomass provide essential primary information about the biosphere.
Artificial Intelligence (AI) is transforming domains from healthcare and agriculture to finance and industry. As progress on Earth meets growing constraints, the next frontier is outer space, where AI can […]
Proteins are among the most important building blocks of nature and play a central role in biological processes in all organisms.
The search for extraterrestrial intelligence (SETI) commensal surveys aim to scan the sky to detect technosignatures from extraterrestrial life.
![[LEFT] Outgoing longwave radiation of six potentially visible hemispheres of the planet. Teegarden's Star is one of the most promising targets for the first observations of LIFE, as a non-transiting rocky planet with similar bulk properties to the Earth, and a relatively quiescent M-dwarf host star. [RIGHT} Cloud fraction averaged over all pressure levels.]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/12/Disentangling-The-Hemispheres.png?resize=1200%2C720&ssl=1)
We use LIFEsim, a software developed by the ETH LIFE team, along with thermal emission maps obtained from a suite of three-dimensional global climate model (GCM) simulations, to explore the […]
Characterizing temperate exoplanet atmospheres remains challenging due to their small size and low temperatures.
B.5 Research and Development of Initiatives of Advanced New Technologies (RADIANT) seeks innovative adaptations and applications of existing AI techniques, concepts, methodologies, etc. to demonstrate their feasibility and potential to […]
