What if the closest intelligent aliens aren’t light-years away in deep space, but buried millions of years deep in our own planet’s geological history? This mind-bending concept explores whether Earth ...

Two scientists explored the idea that there was another civilizaton before humans, which harnessed energy and wiped itself ...

For centuries, humanity has looked toward the stars searching for signs of intelligent life. But what if the biggest ...

Looking ahead: Existing radio surveys may contain signals that were never recognized as potential technosignatures. New ...

Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got stranded on earth when his alien compadres abandoned their botany mission. In ...

"There is a silence in the night sky that has bothered me for as long as I can remember." That line, attributed to Richard Feynman, lands because it gets at a simple, stubborn feeling. The sky looks ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...

Elon Musk’s plans for the future of SpaceX, and humanity, are rooted in an idea conceived in the 1960s when astronomers began to pick up mysterious, unknown radio sources in the cosmos. Soviet ...

For decades, SETI researchers have focused on finding narrow-band radio signals that might stand out from the natural universe. But what if an advanced civilization that wanted to communicate would ...