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1. science.nasa.gov › universe › exoplanetsLife in the Universe: What are the Odds? - NASA Science

   science.nasa.gov › universe › exoplanets

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   Mar 9, 2021 · Cosmic eavesdropping. A shortcut to finding lifeforms like ourselves, of course, would be to intercept tech-savvy communications. Searches for signs of intelligent life have been underway for decades. In recent years, among NASA scientists, such potential signs have acquired an intriguing new name: technosignatures.

   • Searching for Signs of Intelligent Life: Technosignatures

     While the search remains largely focused on...

2. news.columbia.edu › life-intelligence-universeNew Study Estimates the Odds of Life and Intelligence ...

   news.columbia.edu › life-intelligence-universe

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   May 18, 2020 · The analysis is based on evidence that life emerged within 300 million years of the formation of the Earth’s oceans as found in carbon-13-depleted zircon deposits, a very fast start in the context of Earth’s lifetime.

3. Videos

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     space.com

     Why are we still searching for intelligent alien life?

     9 Nov 2021

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     18:02

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     What would intelligent aliens look like? How Extraterrestrials may evolve

     17 Apr 2020

     391.7K views

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     13:50

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     Intelligent Life on Other Planets

     17 Feb 2024

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4. www.livescience.com › intelligent-life-rare-orAn astronomer calculated that Earth's intelligent life is ...

   www.livescience.com › intelligent-life-rare-or

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   May 26, 2020 · A new paper published May 18 in the journal Proceedings of the National Academy of Sciences offers an answer: Life likely spawns quickly and easily under Earth-like conditions. But intelligent...

5. theconversation.com › evolution-tells-us-we-mightEvolution tells us we might be the only intelligent life in ...

   theconversation.com › evolution-tells-us-we-might

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   Oct 18, 2019 · If so, intelligence will evolve on just 1 in 100 trillion habitable worlds. If habitable worlds are rare, then we might be the only intelligent life in the galaxy, or even the visible universe.

6. www.astronomy.com › science › are-we-alone-theAre we alone? The search for intelligent life in the universe

   www.astronomy.com › science › are-we-alone-the

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   Oct 5, 2022 · The current hunt for alien life includes: the Search for Extraterrestrial Intelligence (SETI) Institute, which has scoured the skies for radio signals from intelligent beings since its founding...

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7. phys.org › news › 2020-06-intelligent-life-galaxyResearch sheds new light on intelligent life existing across ...

   phys.org › news › 2020-06-intelligent-life-galaxy

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   Jun 15, 2020 · The two Astrobiological Copernican limits are that intelligent life forms in less than 5 billion years, or after about 5 billion years—similar to on Earth where a communicating civilization...

8. People also ask

   What if intelligent life is common?

   • If we find that intelligent life is common then this would reveal that our civilization could exist for much longer than a few hundred years, alternatively if we find that there are no active civilizations in our Galaxy it is a bad sign for our own long-term existence.

   Research sheds new light on intelligent life existing across the galaxy

   phys.org/news/2020-06-intelligent-life-galaxy.html

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   How long does it take for intelligent life to form?

   • Professor of Astrophysics at the University of Nottingham, Christopher Conselice who led the research, explains: "There should be at least a few dozen active civilizations in our Galaxy under the assumption that it takes 5 billion years for intelligent life to form on other planets, as on Earth."

   Research sheds new light on intelligent life existing across the galaxy

   phys.org/news/2020-06-intelligent-life-galaxy.html

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   Does life develop intelligence?

   • Kipping framed the problem in terms of four possible answers: Life is common and often develops intelligence, life is rare but often develops intelligence, life is common and rarely develops intelligence and, finally, life is rare and rarely develops intelligence.

   New Study Estimates the Odds of Life and Intelligence Emerging Beyond

   news.columbia.edu/life-intelligence-universe-earth-bayesian-statistics

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   Could intelligent life re-appear in Earth-like conditions?

   • A new paper published May 18 in the journal Proceedings of the National Academy of Sciences offers an answer: Life likely spawns quickly and easily under Earth-like conditions. But intelligent life is probably rare and slow to emerge, suggesting it might not re-appear.

   An astronomer calculated that Earth's intelligent life is probably

   www.livescience.com/intelligent-life-rare-or-common-on-Earth.html

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   Will intelligent life re-appear?

   • But intelligent life is probably rare and slow to emerge, suggesting it might not re-appear. Some reports have suggested this paper is about the odds of intelligent life emerging beyond our planet — alien life and alien civilizations. But the author, David Kipping, a Columbia University astronomer, kept his focus on Earth itself.

   An astronomer calculated that Earth's intelligent life is probably

   www.livescience.com/intelligent-life-rare-or-common-on-Earth.html

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   Is earth's intelligent life 'rare'?

   • An astronomer calculated that Earth's intelligent life is probably 'rare.' Here's what that means. Intelligent life would probably not evolve that often if you reran Earth a few hundred times. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works .

   An astronomer calculated that Earth's intelligent life is probably

   www.livescience.com/intelligent-life-rare-or-common-on-Earth.html

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9. science.nasa.gov › universe › search-for-lifeSearching for Signs of Intelligent Life: Technosignatures

   science.nasa.gov › universe › search-for-life

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   Jul 11, 2023 · While the search remains largely focused on non-technological life, NASA scientists also have begun to consider what technological traces of intelligent life – “technosignatures” – might look like.