[astro-ph.IM] The search for extraterrestrial intelligence (SETI) has traditionally framed the detection challenge with a focus on the parameter L in the Drake equation – the communicative lifetime of a […]
Drake Equation
Posted inAstrobiology (general)
Indigenizing The Drake Equation: How Indigenous Methods Can Help Us Understand Life In The Milky Way Galaxy
[astro-ph.IM] The Drake Equation is a thought experiment whose purpose is to understand the ingredients necessary for life and advanced technological civilizations to exist on other worlds in our galaxy.
Posted inBiosignatures & Paleobiology, Intelligence & Language, SETI & Technosignatures, Status Report
Dust To Dust: Prospects For Passive Technosignatures As Relics Of ETI
Technological societies are separated in time, not just space — that is the lesson of the Drake equation.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Intelligence & Language, SETI & Technosignatures, Status Report
Artificial Broadcasts as Galactic Populations: I. A Point Process Formalism for Extraterrestrial Intelligences and Their Broadcasts
Artificial broadcasts from extraterrestrial intelligences (ETIs) are a hypothetical class of celestial phenomena.
Posted inAstronomy & Telescopes, Imaging & Spectroscopy, Intelligence & Language, SETI & Technosignatures, Status Report
Quantifying The Fermi Paradox Via Passive SETI: A General Framework
In this paper we consider the extent to which a lack of observations from SETI may be used to quantify the Fermi paradox.
Posted inAstrobiology (general), Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Interstellar, Status Report
Chemical Complexity and Prevalence of Life in the Universe: A New Method for the Estimation of Key Terms of Drake Equation
I describe a new method of estimating the prevalence of life in the Universe, based on the fact that more chemically complex environments are more rare. The paper makes three […]
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 […]
Posted inAstrobiology (general), Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Intelligence & Language, Origin & Evolution of Life, Press Release, SETI & Technosignatures, Societal Issues
Geoscientists Dig Into Why We May Be Alone In The Milky Way (Tectonics)
New research by University of Texas at Dallas geoscientist Dr. Robert Stern and a colleague suggests a geological explanation for why conclusive evidence for advanced extraterrestrial (ET) civilizations has not […]
Posted inAstrobiology (general), Europa, Missions & Hardware, Press Release, SETI & Technosignatures, Societal Issues, Water/Hycean Worlds & Oceanography
NASA Unveils The Message Heading to Jupiter’s Moon Europa
Following in NASA’s storied tradition of sending inspirational messages into space, the agency has special plans for Europa Clipper, which later this year will launch toward Jupiter’s moon Europa. The […]
Posted inBiosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, SETI & Technosignatures, Status Report
Beyond the Drake Equation: A Time-Dependent Inventory of Habitable Planets and Life-Bearing Worlds in the Solar Neighborhood
We introduce a mathematical framework for statistical exoplanet population and astrobiology studies that may help directing future observational efforts and experiments.