Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.

In 1877, an Italian astronomer mapped faint lines on Mars and called them canali, meaning channels or grooves. But the word ...

An instrument on the Perseverance rover has identified large, complex carbon compounds alongside unusual patterns on the ...

The organic molecules could come from life or from ordinary chemistry — only samples returned to Earth can settle it.

"Measurements of two mudstones show hundreds of organic detections, making this the most robust organic detection in Jezero ...

A study suggests that stellar plasma may distort alien signals, complicating SETI's search for extraterrestrial life by ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

A rare visitor from another star system has undergone one of the most extensive technosignature searches ever conducted on an ...

Scientists now believe alien signals may have already reached Earth, and the reason we keep missing them has nothing to do ...

Is the rest of the cosmos a pristine environment awaiting the arrival of humanity’s “post-human” descendants? Or is advanced ...

SETI scanned 3I/Atlas for more than seven hours and detected no signs of extraterrestrial technology; The comet is only the ...