A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The ...

It starts with a signal. Faint, strange, and unlike anything humanity has ever recorded. Within hours, it escalates into an event that changes the course of history as an alien arrival on Earth ...

For many years, movies and television have influenced how we think about meeting aliens. We are usually shown one of two possibilities: a scary invasion or a friendly species arriving to share ...