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Paradi
Exo-Intelligence Atlas
Paradi / SETI & Signals
Technosignature searches, candidate signals, open data, and observatories designed to detect intelligence at a distance.
Category index
SETI & Signals / 25 pages
Technosignature searches, candidate signals, open data, and observatories designed to detect intelligence at a distance.
SETI & Signalssignal
SETI primer
2026
SETI is a research program, not a belief system
The SETI primer is the fastest way to reframe alien communication as a measurement and search problem rather than a rumor problem.
2 referencesOpen dossier
SETI & Signalssignal
SETI Institute overview
2025
Technosignature work is broadening in scope and instrumentation
The SETI overview page explains how radio, optical, and data-commensal searches fit together inside the Institute’s broader program.
2 referencesOpen dossier
SETI & Signalssignal
Allen Telescope Array
2025
A dedicated SETI instrument with wide-field advantages
The ATA is one of the clearest examples of hardware built with SETI as a primary mission rather than as an occasional side use.
2 referencesOpen dossier
SETI & Signalssignal
COSMIC at the VLA
2023
Commensal observing dramatically expands search time
COSMIC taps the Very Large Array in parallel with other science, turning ordinary telescope operations into continuous technosignature search opportunities.
2 referencesOpen dossier
SETI & Signalssignal
Breakthrough Listen
2025
A large modern technosignature search program
Breakthrough Listen is one of the most visible contemporary technosignature efforts, combining deep surveys, target searches, and public-facing science communication.
2 referencesOpen dossier
SETI & Signalssignal
Breakthrough Listen open-data release
2018
Open data makes extraordinary claims easier to test
The open-format data release matters because the best contact search culture is inspectable, reproducible, and shareable.
2 referencesOpen dossier
SETI & Signalssignal
Technosignatures SAG
2025
A community effort to integrate technosignatures more deeply into NASA science
The study analysis group is a sign that technosignatures are becoming more institutionally connected to exoplanet and astrobiology work.
2 referencesOpen dossier
SETI & Signalssignal
Technosearch index
2026
A meta-resource tracking where technosignature searches have already looked
Technosearch is valuable because it treats SETI like a search field with coverage accounting rather than a parade of disconnected anecdotes.
2 referencesOpen dossier
SETI & Signalssignal
The Wow! Signal
1977+
Iconic, still unresolved, still not proof
The Wow! Signal remains culturally powerful because it was unusual and never conclusively repeated, but that is not the same as demonstrating extraterrestrial origin.
2 referencesOpen dossier
SETI & Signalssignal
Wow! Signal follow-up and reinterpretation
2022-2025
Follow-up work is often about narrowing possibilities, not preserving mystery
Modern SETI follow-up work around the Wow! Signal is a good example of how a field handles a famous candidate without claiming victory.
2 referencesOpen dossier
SETI & Signalssignal
Proxima candidate signal, 2020
2020
Interesting enough to investigate, not strong enough to claim
The initial reporting around a signal from the direction of Proxima Centauri illustrates how easily a candidate can outrun its evidence before analysis is complete.
2 referencesOpen dossier
SETI & Signalssignal
Proxima follow-up analysis, 2021
2021
A strong example of false-positive rejection in action
The later analysis explains why the signal was almost certainly human-generated interference and formalizes parts of a technosignature verification workflow.
2 referencesOpen dossier
SETI & Signalssignal
Earth Detecting Earth
2025
A practical inversion: what of us is detectable at interstellar distance?
This study asks what another civilization with current-like technology could detect about Earth and finds that some human technosignatures are visible much farther than intuition suggests.
2 referencesOpen dossier
SETI & Signalsvideo
SETI Live: Earth Detecting Earth
2025
A video companion to the detectability study
The event page packages the findings into a more accessible discussion format while preserving links to the paper and press release.
2 referencesOpen dossier
SETI & Signalsvideo
Could aliens see us?
2024
A speculative but disciplined public discussion of detectable technospheres
This SETI Live page explores how future Earth technosignatures might be read by distant observers and what that implies for our own search priorities.
2 referencesOpen dossier
SETI & Signalssignal
LaserSETI and the Wow! Signal revisit
2025
A reminder that optical and radio searches can live in one ecosystem
The LaserSETI page revisits the Wow! Signal while also showing how non-radio strategies expand the search space for intelligence.
2 referencesOpen dossier
SETI & Signalsprotocol
Arecibo message
1974
A historic symbolic message, not a practical conversation channel
The Arecibo message is often invoked as evidence that humans have already 'spoken to the stars.' In practice it was more a demonstration of capability than a realistic near-term dialogue attempt.
2 referencesOpen dossier
SETI & Signalsprotocol
Voyager golden record
1977
A cultural and informational artifact aimed at unknown future finders
The Golden Record is less a beacon and more a curated statement of humanity, designed for interpretability if ever encountered by non-human intelligence.
2 referencesOpen dossier
SETI & Signalsprotocol
Pioneer plaque
1972
A compact visual attempt at universal reference points
The Pioneer plaque remains one of the clearest examples of mathematical and pictorial encoding aimed at unknown observers.
2 referencesOpen dossier
SETI & Signalsprotocol
A Sign in Space
2023
A modern simulated-first-contact exercise
A Sign in Space used a transmitted encoded message and a global audience to simulate what receiving an extraterrestrial message might feel like culturally and analytically.
3 referencesOpen dossier
SETI & Signalsprotocol
A Sign in Space launch article
2023
An explicit rehearsal for message reception on Earth
The launch article makes the intent of the project clear: not to claim alien contact, but to practice the social and analytical consequences of one.
2 referencesOpen dossier
SETI & Signalsprotocol
A Sign in Space decoded
2024
Decoding is not the same as interpretation
The project’s later write-up shows how long decoding can take even in a cooperative, bounded exercise where the signal is guaranteed to be meaningful.
2 referencesOpen dossier
SETI & Signalssignal
3I/ATLAS technosignature follow-up
2025
Thorough follow-up without sensational conclusion
Breakthrough Listen’s work on 3I/ATLAS is a model of how potentially interesting interstellar objects can be examined for technosignatures without immediately treating them as alien artifacts.
4 referencesOpen dossier
SETI & Signalssignal
'Oumuamua discussion
2023
A useful case for distinguishing hypothesis space from proof
The SETI talk on 'Oumuamua is valuable because it exposes multiple hypotheses without pretending that speculative possibilities are established facts.
2 referencesOpen dossier
SETI & Signalssignal
Breakthrough Listen all-sky monitor
2025
Scaling up from pointed searches toward continuous coverage
The Westerbork all-sky monitor partnership is a good example of how technosignature search can evolve toward broader, more persistent monitoring.
2 referencesOpen dossier