Humans have always been fascinated with space. We frequently question whether we are alone in the universe. If not, what does ...
Modern Engineering Marvels on MSN

First alien signal may be a civilization’s final cry

Could the first confirmed signal from an extraterrestrial source be less a hello than a goodbye? Astrophysicist David Kipping argues as much, and his “Eschatian Hypothesis” reimagines the way ...