For generations, the search for life beyond Earth has focused on avoiding one of science’s biggest mistakes: claiming a ...

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist ...

Scientists have searched one of the only known visitors to us from another solar system for signs of alien technology – and ...

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

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

Solar winds and coronal mass ejections may scatter narrow signals, making them harder for Earth-based telescopes to detect. The SETI Institute uses radio telescopes to search for signs of intelligent ...