The idea that aliens may have visited the Earth is becoming increasingly popular. Around a fifth of UK citizens believe Earth has been visited by extraterrestrials, and an estimated 7 percent believe that they have seen a UFO. The figures are even higher in the US – and rising. The number of people who believe UFO sightings offer likely proof of alien life increased from 20 percent in 1996 to 34 percent in 2022. Some 24 percent of Americans say they've seen a UFO. This belief is slightly paradoxical as we have zero evidence that aliens even exist. What's more,...