The article explores the possibility of extraterrestrial civilizations existing in our galaxy and the implications of their potential visits to Earth. It discusses the challenges posed by vast interstellar distances and speculates on non-biological alien probes that might reach us, especially if they go dormant during travel. Despite numerous UFO sightings and sophisticated monitoring systems like the Catalina Sky Survey and ATLAS, which can detect small objects in space, no definitive evidence of alien spacecraft has been found, fueling curiosity about Fermi's question: "Where is everybody?"
The distances between stars are daunting, yes, but if travel time doesn't matter - either because the aliens are non-biological robots or because they go dormant for the trip...
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