People have always looked at the stars and wondered if life existed on other planets. Several ancient cultures tell stories in which beings from the stars visit the earth. Not until the mid-twentieth century, however, did the phenomena of alien...

The abduction phenomenon is an umbrella term used to describe hypotheses, claims, or assertions that non-human creatures (usually aliens) kidnap individuals—sometimes called "abductees"—usually for medical testing or for procedures. Others are...