The Pentagon has released another batch of ‘UFO Files’ with footage of unknown objects in the sky—here are the most common ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for ...

Could intelligent alien civilizations really exist somewhere beyond Earth? As advanced telescopes continue discovering new potentially habitable worlds every year, that possibility seems more ...

For decades, the search for life beyond Earth has focused on distant exoplanets and the rusty plains of Mars. Now, a small icy world in orbit around Saturn is emerging as one of the most compelling ...