Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

Left to Right: Steven Yeun in "Nope," the alien in Steven Spielberg's "E.T." and Scarlett Johansson in "Under the Skin" (Universal Pictures / A24) It didn’t take long for stories about ...

Long before modern space exploration, scientists proposed astonishing ways to contact extraterrestrials—from giant burning ...

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

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

Steven Spielberg remains one of Hollywood’s most respected and renowned filmmakers. The humble director, producer and screenwriter has recently released his latest science-fiction film, Disclosure Day ...

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

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

Steven Spielberg’s credulity makes his latest alien contact film, Disclosure Day, mawkish and old-fashioned rather than ...

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

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