NASA Veteran Gentry Lee: Earth Has Not Been Visited by Extraterrestrials, Yet Life Beyond Earth Is Plausible—Exoplanets and Icy Moons as Prime Targets
To the point
A NASA veteran says Earth hasn’t been visited by aliens, life beyond Earth is very likely somewhere, most UFO sightings have simple explanations, and we should look for life on exoplanets like TRAPPIST-1e or K2-18b or on moons such as Enceladus and Titan, since alien life could be very different from Earth life and NASA supports open science.
