Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

JWST lacks the precision to detect life on exoplanets, and this new telescope aims to change that.

These could be quietly ignored until 1947, when postwar alien fever was sparked in Roswell, New Mexico. Metal and rubber ...

Astronomers swept millions of candidates and found no alien signals from K2-18b, setting the first power limit on any ...

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.

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