The universe is vast, ancient, and mostly silent. For decades, scientists have pointed their telescopes toward distant stars, searching for signs of intelligent life. We scan the cosmos for radio ...

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

“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 ...

To assess the plausibility of alien visitors, it’s necessary to understand the obstacles that an extraterrestrial vessel would need to overcome to reach Earth ...

For over six decades, the Search for Extraterrestrial Intelligence (SETI) has been tirelessly scanning the cosmos for signs of alien life. Despite its extensive efforts, the universe remains eerily ...

The universe is vast and teeming with stars – but if intelligent life exists, it may not be able to visit Earth. By Kai James / The Conversation Published May 27, 2026 8:00 AM EDT This article was ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. The Milky Way galaxy has more than 400 billion stars in it. Over the last few decades, ...

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

Humanity has spent eons looking up at the stars and wondering whether we’re alone, or if there are others like us out there in the vast unknown. Our curiosity has only increased as we have become a ...