We’ve been asking ourselves “Are we alone?” for millennia. Greek philosopher Anaximander (circa 610–circa 546 B.C.) is credited with starting the discussion about “cosmic plurality”—the idea of multiple or even an infinite number of planets exists with extraterrestrial life.
This philosophical-turned-scientific question is still fashionable—but it’s time to stop asking it. The answer has always been staring us in the face. No. We are not alone. Of course, as a scientist, I cannot say this with 100-percent certainty, but experience suggests that this is the reality.