Spielberg has graced the silver screen with countless creative alien species in his career, and some have shown to be more ...

Yet after a century of listening, we are still alone in the vast cosmos - though that has not killed the hope that radio telescopes could open a line of communication to alien civilizations. In fact, ...

Just over 40 years ago, in his novel Contact, astronomer Carl Sagan imagined what it would be like to detect radio signals beamed from other intelligent lifeforms in the galaxy. In the story, these ...