In 2010, Stephen Hawking warned that aliens might pose an existential risk to humanity, and that we should therefore be careful about broadcasting our existence to interstellar space.
Could intelligent aliens be hiding from us? A new research paper asks if a unique astronomical phenomenon could effectively hide Earth from any friendly aliens' view.
In this inaugural installment of "Our Cosmic Neighborhood", Avi Loeb gives us perspectives on the challenges presented by any future attempts at communicating with extraterrestrials.
Strange radio waves detected by astronomers in recent days have led some to believe that a hidden stellar object may be lurking near the center of the Milky Way.
While many scientists downplay the idea of extraterrestrials visiting Earth, looking at a seemingly crazy alternative hypothesis makes for an interesting thought experiment.