In his 1856 Adams Prize essay, James Clark Maxwell demonstrated that Saturn’s rings cannot be comprised of a uniform rigid body. This is a consequence of the two-body gravitational interaction […]
SETI & Technosignatures
Posted inBiosignatures & Paleobiology, Habitable Zones, Imaging & Spectroscopy, Intelligence & Language, Interstellar, Press Release, SETI & Technosignatures
Could An Earth-like Alien Civilization Detect Us?
If an extraterrestrial civilization existed with Earth-like technology, would they be able to detect Earth and evidence of humanity? If so, what signals would they detect and from how far […]
Posted inSETI & Technosignatures, Status Report
Earth Detecting Earth: At What Distance could Earth’s Constellation of Technosignatures be Detected with Present-day Technology?
The field of the Search for Extraterrestrial Intelligence (SETI) searches for “technosignatures” that could provide the first detection of life beyond Earth through the technology that an extraterrestrial intelligence (ETI) […]
Posted inIntelligence & Language, Press Release, SETI & Technosignatures, Societal Issues, Video, Audio, Webcasts, Podcasts, Water/Hycean Worlds & Oceanography
Whale Song Has Structure Similar To Human Language
Humpback whale song is a striking example of a complex, culturally transmitted behavior, but up to now, there was little evidence it has language-like structure. Human language, which is also […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release, SETI & Technosignatures
Earth Detecting Earth
A research team led by Dr. Sofia Sheikh of the SETI Institute, in collaboration with the Characterizing Atmospheric Technosignatures project and the Penn State Extraterrestrial Intelligence Center, set out to […]
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Imaging & Spectroscopy, Intelligence & Language, SETI & Technosignatures, Status Report
The Local Galactic Transient Survey Applied to an Optical Search for Directed Intelligence
We discuss our transient search for directed energy systems in local galaxies, with calculations indicating the ability of modest searches to detect optical Search for Extraterrestrial Intelligence (SETI) sources in […]
Posted inAstronomy & Telescopes, Intelligence & Language, SETI & Technosignatures, Status Report
Projections of Earth’s Technosphere: Luminosity and Mass as Limits to Growth
Earth remains the only known example of a planet with technology, and future projections of Earth’s trajectory provide a basis and motivation for approaching the search for extraterrestrial technospheres.
Posted inAI - Data - Apps - Cybernetics, Astronomy & Telescopes, Biosignatures & Paleobiology, Intelligence & Language, SETI & Technosignatures, Status Report
COSMIC’s Large-Scale Search for Technosignatures during the VLA sky Survey: Survey Description and First Results
Developing algorithms to search through data efficiently is a challenging part of searching for signs of technology beyond our solar system.
Posted inAtmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, SETI & Technosignatures, Status Report
Technosignatures: Waste Heat And Habitability: Constraints From Technological Energy Consumption
Waste heat production represents an inevitable consequence of energy conversion as per the laws of thermodynamics.
Posted inAstrobiology (general), Astronomy & Telescopes, Biosignatures & Paleobiology, Intelligence & Language, SETI & Technosignatures, Status Report
Searching For Extraterrestrial Intelligence Across A Century
Exobiology is a burgeoning research field. There is a realistic prospect that in a decade or two we will have the capability to detect biosignatures – non-equilibrium atmospheric chemistry, vegetation […]