A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

These wildly different films explore the wondrous, and sometimes terrifying possibilities of contacting extra-terrestrial life.

A Stanford scientist's model suggests many small rocky planets can't sustain atmospheres, potentially explaining the scarcity ...

Take a drive to the CIA’s Area 51 – a route with more UFO sightings and unexplained mysteries than anywhere else on Earth ...

Teetering near endangered status, the starlet sea anemone produces “an ancient mechanism” for fighting viruses that ...

Nearly every major studio has taken a turn at spinning a great sci-fi franchise, and while there have been a few misfires along the way, arguably the biggest success of them all is Alien. Ridley Scott ...

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

Astronomers turned the Allen Telescope Array toward interstellar comet 3I/ATLAS, formally designated C/2025 N1 (ATLAS), ...

Everything is coming up Stitch. Following last summer's $1 billion-grossing live-action adaptation of the original film, Walt ...

After the famed Betty and Barney Hill encounter in 1961, alleged alien abductions were everywhere—and most of the tales followed the same patterns.

Military history is much more than battlefield trivia. Stacker took a look at 25 recent "Jeopardy!" questions about the ...

The story of the US is, in many ways, remarkable. It achieved independence against the odds, its constitution has lasted more ...