Decades of research have produced signals, chemical signatures, and observations that increasingly resemble what we’d expect ...

Recent observations of the exoplanet K218b revealed chemical compounds in its atmosphere—like dimethyl sulfide—that on Earth ...

ALMA reveals unusual “alien” water in interstellar comet 3I/ATLAS, showing it formed in an extremely cold, distant star ...

This artist’s impression compares the semi-heavy water content of the interstellar comet 3I/ATLAS (left) and Earth (right).

Astronomers in Japan recently launched what they say is the country's first organization dedicated to the search for alien ...

When you're looking for signs of extraterrestrial intelligence, it helps to know what you're looking for and to go about it ...

These targets will guide observations with current and future facilities, including the James Webb Space Telescope and ...

A new study proposes a shift in the search for extraterrestrial life, moving away from individual biosignatures toward ...

An appeals court rejected the Trump administration’s policy of detaining noncitizens arrested inside the US, saying it would ...

Searching for alien life by looking for specific signals from individual planets may overlook a larger pattern, new research ...