[astro-ph.IM] There exist numerous proposals for potential technosignatures that we can search for, but they all tend to be deviations from possible naturally occurring signals. That is, technosignatures tend to […]
Fermi Paradox
Posted inAI - Data - Apps - Cybernetics, Imaging & Spectroscopy, Intelligence & Language, Interstellar, SETI & Technosignatures, Status Report
Autonomous AI-Cosmoindustry and the Quiet Expansion Filter: A Threshold-Based Resolution of the Fermi Paradox
The Fermi paradox is sharpened, not weakened, by plausible extrapolations of artificial intelligence, autonomous robotics, in-situ resource utilization, orbital manufacturing, space-based computing, and uncrewed interstellar probes.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Intelligence & Language, Interstellar, Nanotechnology & SynBio, Sample Return, SETI & Technosignatures, Status Report
Some Thoughts on the Future of Technosignature Searches: Constraining the Fermi Paradox
This paper examines how future technosignature searches may constrain competing resolutions of the Fermi Paradox, with particular attention to the possibility that technologically capable entities (TCEs) are either intrinsically rare […]
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.
![Quantum communication with Q > 0, over distance L, is impossible at wavelengths where the horizontal line corresponding to L lies within the blue shaded region (summarizing the Milky Way ISM’s extinction curve). Gray regions are off limits from the ground. Adapted from [23, 26], with data from [30–37]. -- quant-ph](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/09/On-Interstellar-Quantum-Communication.png?resize=1200%2C715&ssl=1)
Posted inIntelligence & Language, Interstellar, SETI & Technosignatures, Status Report
On Interstellar Quantum Communication And The Fermi Paradox
Since it began Cocconi Morrison, the search for extraterrestrial intelligence (SETI) has focused on interstellar classical communication. Recently, Berera:2020rpl pointed out that, at certain frequencies, photon qubits can retain their […]
Posted inAstronomy & Telescopes, Intelligence & Language, Interstellar, Press Release, SETI & Technosignatures
Why We Might Not Spot Solar Panel Technosignatures On Other Worlds
One of NASA’s key priorities is understanding the potential for life elsewhere in the universe. NASA has not found any credible evidence of extraterrestrial life — but NASA is exploring […]
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Imaging & Spectroscopy, SETI & Technosignatures, Status Report
Detectability of Solar Panels as a Technosignature
In this work, we assess the potential detectability of solar panels made of silicon on an Earth-like exoplanet as a potential technosignature. Silicon-based photovoltaic cells have high reflectance in the […]
Posted inAstrobiology (general), Biosignatures & Paleobiology, Intelligence & Language, SETI & Technosignatures, Status Report
Is The Apparent Absence Of Extraterrestrial Technological Civilizations Down To The Zoo Hypothesis Or Nothing?
The ‘Fermi paradox’ refers to the mismatch between a widely held expectation that advanced technological life should be common in the Universe—recently given impetus by the discovery that other planetary […]
Posted inAstrobiology (general), Intelligence & Language, Science Fiction, SETI & Technosignatures, Status Report
Could AI be the Great Filter? What Astrobiology can Teach the Intelligence Community about Anthropogenic Risks
Where is everybody? This phrase distills the foreboding of what has come to be known as the Fermi Paradox – the disquieting idea that, if extraterrestrial life is probable in […]
Posted inPress Release, SETI & Technosignatures
The Fermi Paradox Revisited: Technosignatures And The Contact Era
A new solution to the Fermi Paradox is presented: probes or visits from putative alien civilizations have a very low probability until a civilization reaches a certain age (called the […]