The scientific Search for Extraterrestrial Intelligence using radio, optical and other astronomical methods.
4 articles tagged SETI
What if humanity is the universe's only intelligent civilization? Explore the Fermi paradox, the rarity of intelligence, the silence of space, humanity's cosmic future, and what it would mean if Earth were truly alone.
The universe is unimaginably vast, and planets appear to be common. So why have we found no confirmed evidence of extraterrestrial life? Explore the Fermi Paradox, the Drake Equation, the Great Filter, alien civilizations, and the possible explanations for the universe's mysterious silence.
Why do humans keep imagining aliens? The answer stretches from ancient Greek philosophers and the idea of infinite worlds to modern astronomy, exoplanet discoveries, and the search for extraterrestrial intelligence. Explore who first considered life beyond Earth, why the idea has endured for thousands of years, and what science actually knows today.
Before Sputnik launched humanity into the Space Age, astronomers were already photographing the night sky. Now researchers are studying mysterious points of light hidden in those old photographs. Could they be evidence of unknown objects—or simply artifacts hiding in the data?
