the.com/fermi paradox
the universe is unfathomably vast, aliens should be everywhere, and yet nobody's called.
means the puzzling gap between the high statistical likelihood of alien civilizations existing and the total absence of evidence for them.
from named after physicist enrico fermi, who in 1950 reportedly blurted 'where is everybody?' over lunch at los alamos while discussing extraterrestrials with colleagues.
casual originborn from a lunchtime joke, not a formal paper
drake equationlater tried to quantify fermi's gut feeling mathematically
great filterone grim theory: civilizations destroy themselves before contact
galaxy size100 billion stars, zero confirmed signals back
for instance
wow signal — 1977 ohio radio burst, never repeated or explained
dyson sphere search — astronomers scan for alien megastructures blocking starlight
seti project — since 1960, listening to space, still silence
breakthrough listen — $100 million initiative launched 2015, ongoing