The universe is vast, ancient, and mostly silent. For decades, scientists have pointed their telescopes toward distant stars, ...

“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 ...

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

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

Scientists may have discovered how extraterrestrial civilizations could actually detect and find Earth.

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, ...