The Atacama Large (sub-)millimeter Array (ALMA) has been in scientific operations for almost 15 years.
cosmology
Posted inAstrobiology (general), Astronomy & Telescopes, Biophysics, Press Release, Stellar Cartography
Naturally Occurring Network Structures At Vastly Different Scales
Editor’s note: Astrobiology has links to and from everything NASA does. I wish NASA would think outside the box when highlighting this topic – and use the word for this […]
Posted inAstronomy & Telescopes, Imaging & Spectroscopy, Interstellar, Status Report, Stellar Cartography
A Revised Three-dimensional Stellar Cartography: Visualization Of The Local Group of Galaxies
A new three-dimensional reconstruction of the Local Group (142 confirmed members) and nearest galaxies (6 members) is presented, addressing the lack of up-to-date visual representations that reflect the rapid pace […]
![[LEFT] Best value of the minimum probability for each cosmology scenario-habitability condition pair mentioned in the text. For each element in this chart, the minimum probability of the best combination of habitability conditions of all those which include the one mentioned is displayed. The top row includes combinations of up to 8 habitability conditions; the rest are capped at 5.[RIGHT] Same - but comparing against origin of life scenarios. -- astro-ph.CO](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/09/Multiverse-Predictions-for-Habitability-Fundamental.png?resize=1200%2C722&ssl=1)
Posted inAstrochemistry, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Habitable Zones, Status Report
Multiverse Predictions for Habitability: Fundamental Physics and Galactic Habitability
In the multiverse hypothesis, a range of universes exist with differing values of our physical constants.
Posted inAstronomy & Telescopes, Interstellar, Press Release, Stellar Cartography
Is Earth Inside A Huge Void?
Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than in neighbouring regions of the universe, astronomers say.
Posted inAstronomy & Telescopes, Imaging & Spectroscopy, Interstellar, Press Release
The Galactic Journey Of Our Solar System
An international research team led by the University of Vienna has discovered that the Solar System traversed the Orion star-forming complex, a component of the Radcliffe Wave galactic structure, approximately […]
Posted inGaia - Planetary Perspectives, Habitable Zones, Intelligence & Language, Origin & Evolution of Life, Panspermia, SETI & Technosignatures, Status Report
Percolation Of ‘Civilisation’ In A Homogeneous Isotropic Universe
In this work, we consider the spread of a ‘civilisation’ in an idealised homogeneous isotropic universe where all the planets of interest are habitable.
![CASBI pipeline. In our analysis the Template Library is fixed to the NIHAO simulations. The choice of the Template Library incorporates all the assumptions that we make on the chemical enrichment histories of Galaxies, the dynamical effects that accreted objects undergo, and the cosmology, making this part the principal cause of possible misspecification. We sample non-repeated subhalos aiming to reproduce a Luminosity function N(< L), [17] with fixed total stellar mass budget of the halo [11]. The SBI pipeline can incorporate a Surrogate Simulator to perform the sequential version of NPE. The Observational Realism encapsulates all effects bridging the gap between simulation and observation (e.g. observational uncertainties, selection functions, realistic in-situ stars background, etc.). -- astro-ph.GA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/11/CASBI-Chemical-Abundance-Simulation.png?resize=1200%2C720&ssl=1)
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report
CASBI – Chemical Abundance Simulation-Based Inference for Galactic Archeology
Galaxies evolve hierarchically through merging with lower-mass systems and the remnants of destroyed galaxies are a key indicator of the past assembly history of our Galaxy. However, accurately measuring the […]
Posted inAstronomy & Telescopes, Status Report, Stellar Cartography
The Impact Of The Cosmological Constant On Past And Future Star Formation
We present an extended analytic model for cosmic star formation, with the aim of investigating the impact of cosmological parameters on the star formation history within the ΛCDM paradigm.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Imaging & Spectroscopy, Intelligence & Language, Interstellar, Origin & Evolution of Life, People Of Astrobiology, Press Release, SETI & Technosignatures, Stellar Cartography
A New Model Calculates The Chances Of Intelligent Life Elsewhere
The chances of intelligent life emerging in our Universe – and in any hypothetical ones beyond it – can be estimated by a new theoretical model which has echoes of […]