The Great Filter hypothesis proposes that the emergence of technological societies capable of interstellar travel depends on a small number of exceptionally hard and highly improbable steps.
Technosignature
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, SETI & Technosignatures, Status Report
The Search For Technosignatures: A Review Of Possibilities
This paper aims to review the diverse range of technosignatures that have been proposed in the literature.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Intelligence & Language, Interstellar, SETI & Technosignatures, Status Report
Isolating Broadband Radio Technosignatures (BRaTs): A Framework for Detecting Planetary-Scale Leakage
The search for extraterrestrial intelligence (SETI) has traditionally focused on the detection of narrowband electromagnetic beacons.
Posted inAstronomy & Telescopes, Citizen Science / Open Science, Intelligence & Language, SETI & Technosignatures, Status Report
Results Of Ten Tears Of UCLA SETI Searches With The Green Bank Telescope
We have been conducting a search for narrowband radio signals with the L-band receiver (1.15-1.73 GHz) of the 100 m diameter Green Bank Telescope (Margot et al., 2023). So far, […]
Posted inAI - Data - Apps - Cybernetics, Astronomy & Telescopes, SETI & Technosignatures, Status Report
Phase-Space Crystallization in Galactic Globular Clusters: A Gaia-Based Metric and Implications for Technosignature Searches
We develop a model-independent framework to quantify phase-space “crystallization”, the degree of ordered radial and kinematic substructure, in 79 Galactic globular clusters using the Gaia EDR3-based membership catalogue of E. […]
Posted inAlpha Centauri, Biosignatures & Paleobiology, Cubesats and smallsats, Exoplanets, -moons, -comets, Gaia Mission, Habitable Zones, Interstellar, Missions & Hardware, Proxima Centauri, Status Report
Science From The In Situ Exploration Of Tthe Proxima Centauri System
In the future interstellar exploration at near-relativistic speeds will be possible using beamed energy laser propulsion.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Spectral Signatures From The Habitable Zone
This work describes the context and approach for the detection of spectroscopic signatures from planets in the habitable zone of nearby stars.
Posted inAstronomy & Telescopes, Imaging & Spectroscopy, Press Release, SETI & Technosignatures
Terrestrial Technosignatures: Satellites Capture The Glowing Pulse Of Human Civilization
An analysis of data from the VIIRS DNB satellite instrument covering the years 2014 to 2022 finds that nighttime lighting is increasing globally by about two percent per year. “Although […]
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Intelligence & Language, SETI & Technosignatures, Status Report
A TESS Test of the Hybrid Ring Strategy for Technosignature Searches Using GRB 221009A
We present the first observational test of the hybrid ring strategy, a general coordinated signaling scheme proposed by Seto (2025), which provides a practical Schelling-point realization for interstellar signaling.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Comets and Asteroids, Intelligence & Language, Interstellar, Magnetic Fields, Electromagnetism, bioelectricity,, SETI & Technosignatures, Status Report
Narrowband Radio Technosignature Search Toward 3I/ATLAS With FAST
3I/ATLAS is the third confirmed interstellar object passing through the Solar System. In this work, we conduct narrowband radio technosignature search toward 3I/ATLAS using the Five-hundred-meter Aperture Spherical Telescope (FAST) […]