![Planets capable of supporting high O2 concentrations and, hence, technological civilizations. This figure shows the likely composition of planetary atmospheres based on mass and equilibrium temperature. For planets whose temperature and mass would lead to primarily CO2/N2/H2O atmospheres, high oxygen levels require a biological origin, i.e. photosynthesis. For higher equilibrium temperatures, high O2 levels can occur via the runaway greenhouse effect and the photolysis of water vapor at high altitudes. (Figure adapted with permission from [7], Royal Society Publishing.) -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/01/Is-oxygen-the-cosmic-key.png?resize=1200%2C717&ssl=1)
In the quest to understand the potential for life beyond Earth, researchers are widening their search to encompass not only biological markers, but also technological ones.
Intelligence & Language
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Intelligence & Language, SETI & Technosignatures, Status Report
SETI At FAST In China
Since the commencement of the first SETI observation in 2019, China’s Search for Extraterrestrial Intelligence program has garnered momentum through domestic support and international collaborations. Several observations targeting exoplanets and […]
Posted inAstronomy & Telescopes, Budgets and Policy, Conferences and Meetings, Intelligence & Language, Interstellar, SETI & Technosignatures, Societal Issues, Status Report
Bio-techno-signature Monitoring and Communication Guideposts for Extraterrestrial Life
Abstract — Attendees at the First Penn State SETI Symposium collaborated to develop guideposts for monitoring for and communicating with extraterrestrial life.
Posted inIntelligence & Language, Press Release, SETI & Technosignatures, Societal Issues, Water/Hycean Worlds & Oceanography
Whale-SETI: Groundbreaking Encounter With Humpback Whales Reveals Potential For Nonhuman Intelligence communication
A team of scientists from the SETI Institute, University of California Davis and the Alaska Whale Foundation, had a close encounter with a non-human (aquatic) intelligence.
Posted inAI - Data - Apps - Cybernetics, Intelligence & Language, SETI & Technosignatures, Status Report
Whale Speech: Approaching An Unknown Communication System By Latent Space Exploration And Causal Inference
This paper proposes a methodology for discovering meaningful properties in data by exploring the latent space of unsupervised deep generative models. We combine manipulation of individual latent variables to extreme […]
Posted inEducation and Outreach, Intelligence & Language, Interstellar, SETI & Technosignatures, Societal Issues, Status Report
Message In A Bottle – An Update To The Golden Record: 1. Objectives And Key Content Of The Message
In the first part of this series, we delve into the foundational aspects of “Message in a Bottle (MIAB)” (henceforth referred to as MIAB). This study builds upon the legacy […]
Posted inIntelligence & Language, SETI & Technosignatures, Status Report
The Number Of Possible CETIs Within Our Galaxy And The Communication Probability Among These CETIs
As the only known intelligent civilization, human beings are always curious about the existence of other communicating extraterrestrial intelligent civilizations (CETIs).
Posted inIntelligence & Language, Interstellar, SETI & Technosignatures, Societal Issues, Status Report
Interstellar Diplomacy
The Defense Department and NASA are investigating the possibility that aliens are currently surveilling Earth.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Intelligence & Language, Origin & Evolution of Life, Status Report, Water/Hycean Worlds & Oceanography
A Bayesian Analysis of Technological Intelligence In Land And Oceans
Current research indicates that (sub)surface ocean worlds essentially devoid of subaerial landmasses (e.g., continents) are common in the Milky Way, and that these worlds could host habitable conditions, thence raising […]
Posted inEducation and Outreach, Intelligence & Language, Press Release, SETI & Technosignatures, Societal Issues
First Contact: Global Team Simulates Message From Extraterrestrial Intelligence To Earth
What would happen if we received a message from an extraterrestrial civilization?