The search for signs of intelligent life elsewhere in the universe should not only focus on detection of electromagnetic signals, but should also seek evidence of the physical artifacts that an intelligence life form might produce, a scientist at the Fermi National Accelerator Laboratory suggested in a paper (pdf) last month.
“Searching for signatures of cosmic-scale archaeological artifacts such as Dyson spheres or Kardashev civilizations is an interesting alternative to conventional SETI [Search for Extraterrestrial Intelligence, which searches for radio waves]. Uncovering such an artifact does not require the intentional transmission of a signal on the part of the original civilization. This type of search is called interstellar archaeology or sometimes cosmic archaeology.”
All of this of course is quite speculative, not to say whimsical. “With few exceptions interstellar archaeological signatures are clouded and beyond current technological capabilities,” the author notes.
But the concept and the logic behind it are explained with pleasant clarity in “Starry Messages: Searching for Signatures of Interstellar Archaeology” by Richard A. Carrigan, Jr., Fermi National Accelerator Laboratory, December 1, 2009.
To strengthen federal–state alignment, upcoming AI initiatives should include three practical measures: readiness assessments before fund distribution, outcomes-based contracting tied to student progress, and tiered implementation support reflecting district capacity.
“FAS is very pleased to see the Fix Our Forests Act, S. 1426, advance out of Committee. We urge the Senate to act quickly to pass this legislation and to ensure that federal agencies have the capacity and resourcing they need to carry out its provisions.”
Using visioning, world-building, scenario planning, and other foresight tools, participants set aside today’s constraints to design blue-sky models of a future American government.
With summer 2025 in the rearview mirror, we’re taking a look back to see how federal actions impacted heat preparedness and response on the ground, what’s still changing, and what the road ahead looks like for heat resilience.