A constellation of classified defense satellites built by the commercial company SpaceX is emitting a mysterious signal that may violate international standards, NPR has learned. Satellites associated ...

Ever wonder what your dog is trying to say? Well, a University of Texas at Arlington researcher is aiming to turn barks, howls and whimpers of man's best friend into intelligible speech—a kind of ...

The Fermi Paradox, first devised by physicist Enrico Fermi in the 1950s, asks why we haven’t detected alien civilization yet, despite the vast universe teeming with countless potentially habitable ...