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The Story
The anti-solar point makes SETI more focused, but the first observations found no matching signal.
The Allen Telescope Array campaign is a disciplined test of a specific prediction: an extraterrestrial transmitter might choose the anti-solar alignment because it is geometrically conspicuous to civilizations that can observe Earth’s transit. The first observations found no matching signal. The result is useful as a search baseline, not evidence that the alignment works.
- Search designA sharply defined target lets researchers test one hypothesis with repeatable observations rather than scan the entire sky indiscriminately.
- EvidenceThe pilot result narrows what is known: this search found no matching signal, while the broader question remains open.
- SETI Institute researchers are using the Allen Telescope Array for a multiyear survey of the anti-solar point, guided by a possible shared choice by transmitting civilizations.
- The pilot survey observed for about 17 hours over three nights and found no signal matching extraterrestrial technology.
- The anti-solar strategy extends the idea that independently communicating civilizations might converge on conspicuous locations or moments without prior coordination.
Deeper Insight
The Allen Telescope Array found silence opposite the Sun. SETI is hunting for shared logic, not just alien noise.
For about 17 hours over three nights, the Allen Telescope Array, a radio telescope built for SETI, stared opposite the Sun and found no matching signal. The survey tests whether a Schelling point, an obvious choice two strangers might make independently, can bridge the silence between civilizations.
- What it could changeA successful signal would give SETI a sharper map of where to listen for deliberate contact.
- How it touches todayEven now, the search is asking whether distant minds could recognize the same cosmic landmarks.
- Our futureIf the pattern holds, contact may begin with a place both civilizations think is impossible to miss.
- The anti-solar strategy rests on a Schelling-point logic: two civilizations might independently select a conspicuous alignment as a place or time for contact.
- Mutual detectability proposes game-theoretic rules for targeted SETI based on evidence that both civilizations can observe and interpret, including transiting exoplanets.
- Other proposals apply the same coordination logic to beacon design and frequencies, including narrow beams and mathematically natural frequency choices.
Sources · 7
Featured · Primary source · export.arxiv.org
export.arxiv.org
Draft version November 23, 2021 Typeset using LATEX default style in AASTeX63 Planck Frequencies as Schelling Points in SETI Jason T. Wright 1 1Department of Astronomy & Astrophysics and Center for Exoplanets and Habitable Worlds and Penn State Extraterrestrial Intelligence Center 525 Davey Laborato
Read sourceAnalysis · phys.org
When should we listen for alien signals? Scientists turn to game theory
When should we listen for alien signals? Scientists turn to game theory November 3, 2026 # When should we listen for alien signals? Scientists turn to game theory by SETI Institute edited by Robert Egan The SETI Institute's Allen Telescope Array. Credit: Isabel Gerrard; edited by Ananya Kalapatapu Finding a signal from an extraterrestrial civilization takes more than just pointing a telescope in t
Read sourceAnalysis · seti.org
When Should We Listen for Alien Signals? SETI Institute Scientists Turn to Game Theory
When Should We Listen for Alien Signals? SETI Institute Scientists Turn to Game Theory # When Should We Listen for Alien Signals? SETI Institute Scientists Turn to Game Theory Using game theory and the Allen Telescope Array, researchers are testing whether extraterrestrial civilizations might choose
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