The federal government says it has a slew of mysteries it can’t solve. The sorts of mysteries that thrill daydreamers, conspiracy theorists, and scientists: Are there Unidentified Flying Objects buzzing around us?
In a report last week, national security officials released a study of sightings dating back almost two decades. They didn’t declare the existence of alien craft, but they didn’t rule it out either.
Astronomer Doug Duncan, of the University of Colorado, has spent a career thinking about extraterrestrial life and he has some thoughts.