The Great Silence: Science and Philosophy of Fermi's Paradox by Milan M. Ćirković
Explores the multifaceted problem named after the great Italian physicist Enrico Fermi and his legendary 1950 lunchtime question "Where is everybody?" In many respects, Fermi's paradox is the richest and the most challenging problem for the entire field of astrobiology and the Search for ExtraTerrestrial Intelligence (SETI) studies.
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#FermisParadox
In a recent study, a team of #astrobiologists considered the possible resolutions and concluded that only two possibilities exist. Either #extraterrestrial civilizations (ETCs) are incredibly rare (or non-existent), or they are deliberately avoiding contact with us (aka. the “Zoo Hypothesis“). #FermisParadox
After all of This Time Searching for #Aliens, is it The Zoo Hypothesis or Nothing?
https://www.universetoday.com/165005/after-all-of-this-time-searching-for-aliens-are-we-stuck-with-the-zoo-hypothesis/
In 1950, during a lunchtime conversation with colleagues at the Los Alamos National Laboratory, famed physicist Enrico Fermi asked the question that launched a hundred (or more) proposed resolutions. “Where is Everybody?” In short, given the age of the Universe (13.8 billion years), the fact that the Solar System has only existed for the past … Continue reading "After all of This Time Searching for Aliens, is it The Zoo Hypothesis or Nothing?"
Conquer the Galaxy
While thinking of #FermisParadox, I came across a small exercise of exponential growth.
What if humanity comes up with a canonical plan to go to another star system. We take it conservative and plan for the year 3000 until all technology is in place. Then we set out with a big generation ship to settle in the system of Alpha Centauri.
From then on, we do the same every 1.000 years. With these basic rules in mind, I've tried to calculate how long it would take to conquer the whole milky way. I came across a somehow spheric expansion and took the rather flat geometry of our galaxy into consideration. The result was an exponential factor of 1.0018.
Put it the other way, it would take 15000 iterations to fill the whole galaxy. Or 15 million years. That sounds much - and also not. 15 million years ago, the dinosaurs were already 50 million years history. Yet all these numbers sound pretty conservative considering our current technological progress.
An amazing short story by Caitlin Johnstone, who knew?!
Fermi’s Other Paradox
https://caitlinjohnstone.com/2021/06/09/fermis-other-paradox/
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