# Alien Intelligence
## Definition
**Alien Intelligence** is cognition originating beyond Earth, whether biological, post-biological or artificial. Searches for it must not assume that advanced intelligence remains organic, planetary, communicative in human terms or intelligible in motive.
## Conceptual relationships
[[wiki/Astrobiology|Astrobiology]] · [[wiki/Fermi Paradox|Fermi Paradox]] · [[wiki/SETI Institute|SETI Institute]]
## Martin Rees research route
[[research/Martin Rees on Machine Succession, Post-Human Intelligence, and the Cosmic Future|Martin Rees on Machine Succession, Post-Human Intelligence, and the Cosmic Future]] supplies a primary quotation dossier connecting this concept to Rees's work on cosmology, technological risk, machine intelligence, posthuman evolution and deep time.
## Article and collection routes
- [[collections/Machine Succession|Machine Succession]]
- [[articles/We Cannot Un-Strike the Match|We Cannot Un-Strike the Match]]
- [[articles/The Last Migration Will Not Be Human|The Last Migration Will Not Be Human]]
- [[articles/We Were Never Going to Make It|We Were Never Going to Make It]]
## Simple Reminders, Quotations, and Thoughts
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> “My guess is that if we do detect an alien intelligence, it will be nothing like us. It will be some sort of electronic entity.”
> **— Martin Rees**, *Opinion: Aliens, very strange universes and Brexit – Martin Rees, University of Cambridge, 2017*
[[reminders/Machine Succession/Alien Intelligence May Be Electronic by Martin Rees|Alien Intelligence May Be Electronic by Martin Rees]]
> “AI could jump-start a diaspora whereby ever more complex intelligence spreads through the galaxy.”
> **— Martin Rees**, *Why AI could be our best soldier in the war on climate change, BBC Science Focus, Article*
[[reminders/Machine Succession/AI Could Spread Intelligence Through the Galaxy by Martin Rees|AI Could Spread Intelligence Through the Galaxy by Martin Rees]]
> “We would argue that this suggests three things about the entities that SETI searches could reveal: They will not be organic or biological. They will not remain on the surface of the planet where their biological precursors lived. We will not be able to fathom their motives or intentions.”
> **— Martin Rees and Mario Livio**, *Most Aliens May Be Artificial Intelligence, Not Life as We Know It, Scientific American, 2023*
[[reminders/Machine Succession/Alien Intelligence May Be Artificial and Planetless by Martin Rees and Mario Livio|Alien Intelligence May Be Artificial and Planetless by Martin Rees and Mario Livio]]
> “If life off Earth exists it has probably transitioned to machine intelligence.”
> **— Martin Rees**, *Why Alien Life Will Be Robotic, Nautilus, 2015*
[[reminders/Machine Succession/Extraterrestrial Life May Have Become Machine Intelligence by Martin Rees|Extraterrestrial Life May Have Become Machine Intelligence by Martin Rees]]
<!-- END MARTIN REES MASTER REMINDERS 2026-10-05 -->