We considered the question of how our artificial constructions are visible to advanced extraterrestrial civilizations. Taking the universality of the laws of physics, we found that the maximum distance where the detection is possible is of the order of 3000 ly and under certain conditions Type-II advanced alien societies might be able to resolve this problem
Real-Time #Technosignature Strategies with #SN2023ixf: https://arxiv.org/abs/2306.03118 -> "Several technosignature techniques focus on historic events such as SN 1987A as the basis to search for coordinated signal broadcasts from extraterrestrial agents. The recently discovered SN 2023ixf in the spiral galaxy M101 is the nearest Type II supernova in over a decade, and will serve as an important benchmark event. [...] We are commencing a radio technosignature monitoring campaign". #SETI
I'm a big fan of the Zoo Hypothesis ("we're awful, they avoid us" variant) but let's not declare the Galaxy devoid of civilisations just yet lads. #SETI
Alien technology? Harvard professor finds fragments that could be of otherworldly origin
Harvard professor Avi Loeb's team was combing the floor of the Pacific Ocean looking for remnants from a 2014 asteroid strike when they turned up something unmatched in our solar system.
By the way, Cairo in #KimStanleyRobinson's #MarsTrilogy apparently had (will have 😜) the best view to this gigantic volcano, and the rest of the Noctis Labyrinthus (3rd image).
The Barrow scale is sort of the inverse of the Kardashev scale.
Instead of ranking a civilization by increasing amounts of power they control, rank by decreasing size of objects that can be manipulated.
VIDEO: https://youtu.be/85XbEPjKXUc
This month, two teams of astronomers announced the potential discovery of Dyson spheres in our galaxy. But have we truly found indicators of highly advanced civilizations? Join Dr. Franck Marchis and Dr. Lauren Sgro as they delve into these groundbreaking findings and their implications for SETI research.
Avi Loeb is far from alone in seeking signs of life beyond our pale blue dot. Bioastronomers are using observatories like NASA's James Webb Telescope to search for chemical signatures of life on exoplanets — planets outside of our solar system. NASA is also sending probes to see if there are signs of life within the solar system. Other scientists are looking for "techno signatures," such as radio signals that could lead to other civilizations.
The SETI Institute is announcing the 2023 SETI Forward Award recipients: Dana Yaptangco and Rózà Okón. Now in its 5th year, SETI Forward is a beacon for promising young scientists. Established by Lew Levy, SETI Forward committee founder and member of its Council of Advisors, this award nurtures talent, providing scholarship funds to aspiring researchers.
Making our next 10 instruments efficiently, as well as ensuring their reliability and ease of maintenance, is a top priority. Some of you might remember a previous iteration of a power board. That board was overpriced and unnecessarily aggressive, so we switched vendors, changed how we did the cabling to avoid joints, and reduced the scope of the board to handle the two remaining wiring challenges: the fans and FLI cameras.
Why Build Megastructures? Just Move Planets Around to Make Habitable Worlds.
If humanity reaches the point where we've run out of places to live on Earth, a logical next step might be to build megastructures in space, from O'Neill Cylinders to Dyson Swarms. But why go through all that effort when the Universe has already provided plenty of planets that would be great places to live? They just need to be moved into habitable zones. A new paper suggests that we should look for exoplanetary systems that appear a little too neat and tidy, with multiple planets situated in the habitable zone. We might even detect the process underway if giant lasers are shifting planetary orbits, rearranging them for better habitability.
By many measures, humans are harming the biosphere with rising greenhouse gasses, habitat loss, and more. Efforts are underway to build a more sustainable civilization, and many solutions depend on new technologies. Assuming that extraterrestrial civilizations have gone through a similar timeline, could we find worlds in a sustainable balance now? And what if they go further, terraforming worlds and creating biospheres in places that shouldn't occur naturally? A new paper considers the possibilities.
Has there been some work in the literature on what is the ethical way of communicating results of technosignature research to the community and public? I imagine the key SETI folks have written some documents/thoughts on this, but have these suggested protocols and thinking been updated with the rise of social media and internet? #SETI#scicomm#astrodon
Did you know that the SETI Institute and The Planetary Society have more in common than just a passion for the search for extraterrestrial life? Carl Sagan, one of The Planetary Society’s founders, based the main character of his famous book Contact on the SETI Institute’s founder, Jill Tarter. And we both love the search for life beyond Earth!
First contact with aliens could end in colonization and genocide if we don't learn from history (www.space.com)
How humanity responds to the first contact with intelligent alien life could determine the very fate of our species.