From Andreas - “Although the likelihood of discovering simple (biosignatures) or intelligent (technosignatures) life in our galaxy is unknown, a true positive detection is expected to significantly impact society through amplification by social media & the news media.
Research in risk & science communication shows that risk perceptions and public representations of astrobiology/SETI play vital roles in how these events unfold in the public sphere.
What happens after we discover life beyond Earth?
Today Martin Dominik is speaking with the SETI Institute’s Franck Marchis about our paper on post-detection futures.
https://www.youtube.com/watch?v=cULB0k2Cb7s
Live in 3 hours 30 mins
#SETI #PostDetection #astronomy #astrobiology #technosignatures #space #science
#SGU #TheSkepticsGuideToTheUniverse
The Skeptics Guide #1052 - Sep 6 2025
Quickie with Bob: Real #Interstellar #Technosignatures; News Items: Sexless #Seeds, Spouses Share Psychiatric #Disorders, #CRISPR Improvement, #Robotic Bee, Tin Man Syndrome #Retraction, Super #Wood; Who's That #Noisy; Taxing Deductions; #Science or Fiction
Webseite der Episode: https://www.theskepticsguide.org/podcast/sgu
Mediendatei: https://traffic.libsyn.com/secure/skepticsguide/skepticast2025-09-06.mp3
Des civilisations disparues avant même d’être détectées ?
Et si des civilisations extraterrestres s’étaient déjà éteintes sans laisser de trace détectable ? L’idée des technosignatures perdues inspire à la fois vertige scientifique et scénarios de jeu de rôle, notamment dans MEGA, où les PJ peuvent enquêter sur des mondes oubliés, des IA fantômes, ou des cultures effondrées depuis des millénaires.
https://scriiipt.wordpress.com/2025/08/05/des-civilisations-disparues-avant-meme-detre-detectees/
Wow@Home: Bringing a radio telescope to your home is now as easy and fun as setting up satellite TV — and it’s even more affordable! #RadioAstronomy #Astrophysics #RFI #Technosignatures #SETI #AreciboWow #WowSignal https://phl.upr.edu/wow/outreach
“The idea of searching for resulting ‘ #technosignatures’ as remotely detectable evidence of #extraterrestrial #technology follows the same logic as exoplanet #biosignature #science” aeon.co/essays/why-w...
Why we’re searching for alien ...
3️⃣ Listening to the Galactic Center
A new study scanned the Galactic Center at 150 MHz for alien signals—but once again, silence. If life is out there, why aren’t they talking? Or are we just listening on the wrong frequencies?
📖 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/87A3B3FC3B2E271407B7733E155EBF90/S1323358022000054a.pdf
#Technosignatures #PonderLab #AliensWeek
SETI Researchers Double-Checked 1 Million Objects for Signs of Alien Signals https://www.universetoday.com/170735/seti-researchers-double-checked-1-million-objects-for-signs-of-alien-signals/ #karlg.janskyverylargearray #radiointerferometry #technosignatures #lifebeyondearth #radioastronomy #algorithm #bigdata #cosmic #seti
3-Feb-2025
Could a twin Earth detect #Earth?
Researchers used a theoretical, modeling-based method, and this study is the first to analyze multiple types of #technosignatures together rather than separately. The findings revealed that radio signals, such as planetary radar emissions from the former Arecibo Observatory, are Earth’s most detectable technosignatures, potentially visible from up to 12,000 light-years away.
https://www.eurekalert.org/news-releases/1072482
#science #astrobiology #exoplanets
1420 MHz is the best frequency to spam alien astronomers. 😄 #seti #technosignatures #wowsignal #arecibowow
Apply Now!
William J. Welch Postdoctoral Fellowship
Deadline: December 20th, 2024
Focusing on "Engineering the Future of Cosmic Exploration," this fellowship covers a wide range of fields, including advanced radio #astronomy techniques, the interstellar medium, the development of cutting-edge #instrumentation and #technology in radio astronomy, time-domain / radio transient #science, and #technosignatures.
Learn more: https://www.seti.org/welch-fellowship
The Last Arecibo Message https://phl.upr.edu/message/ #AreciboMessage #50Anniversary #InterstellarCommunication #Technosignatures #SETI #METI #Extraterrestrial
The Wow! Signal Deciphered. It Was Hydrogen All Along. https://www.universetoday.com/168176/the-wow-signal-deciphered-it-was-hydrogen-all-along/ #astrophysicalmaser #softgammarepeater #technosignatures #hydrogenmaser #transients #wow!signal #astronomy #magnetar #arecibo #seti
https://www.physics.ox.ac.uk/events/breakthrough-discuss-2024
"A revolution in #datascience, driven by advances in #AI, is changing how we think about searching for intelligence beyond the Earth, aided by a new willingness to consider novel #technosignatures and modes of searching…and a growing understanding of the range of environments offered by the Solar System and an increasingly diverse set of exoplanets have similarly broadened our ideas about biological possibilities…"
'‘Amazing’ new technology set to transform the search for #AlienLife
A conference in the #UK this week will outline new developments in a project to look for ‘#technosignatures’ of other advanced species'
Astronomers are on the Hunt for Dyson Spheres https://www.universetoday.com/166921/astronomers-are-on-the-hunt-for-dyson-spheres/ #searchforextra-terrestrialintelligence #extraterrestrialintelligences #typeiicivilization #extraterrestrial #technosignatures #kardashevscale #dysonspheres #astronomy #infrared #m-dwarfs #surveys #gaia
For the last talk of this session, we‘ve got Ravi Kopparapu on the science of #technosignatures.
A technosignature is any element, molecule, feature,… that shows past or present life. Do we have the technology to detect technology?
We want to use atmospheric spectroscopy to detect biosignatures. What are technosignatures? An example is pollution through industrial activity (NO2) or CFCs or lights.
With enough telescope time, we‘d be able to see that! #ExSSV
Good morning friends! I am back to tell you more from #ExSSV - apologies for skipping yesterday, my mind wasn’t up for it.
Today, we start with #habitability, #biosignatures #technosignatures.
We kick off the session with Tiffany Kataria on assessing #conditions for the origin of #life on #exoplanet. For Tiffany, the origin of life is from geophysics to biophysics and important - habitable doesn’t mean inhabited and the origin of life is a way to rule out these false positives. #ExSSV
We Could Snoop on Extraterrestrial Communications Networks
https://www.universetoday.com/165822/we-could-snoop-on-extraterrestrial-communications-networks/
"Part of the challenge is that we don’t know what the nature of an alien signal might be. It’s a bit like finding a needle in a haystack when you don’t know what the needle looks like."
Finding the ET Signal from the Cosmic Noise
Searching the SN 1987A SETI Ellipsoid with TESS
https://astrobiology.com/2024/02/searching-the-sn-1987a-seti-ellipsoid-with-tess.html
"We examined the TESS light curves of these stars during the Ellipsoid crossing event and found no anomalous signatures. We discuss ways to expand this methodology to other surveys, more targets, and different potential signal types."
