Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.

"If a signal gets broadened by its own star's environment, it can slip below our detection thresholds, even if it's there." ...

Life's capacity to survive in simulated lunar and Martian soils has been explored in two papers published in Scientific ...

The most rewatchable sci-fi movies aren't overly long or hard to understand — they're packed with equal elements of humor, ...

A viral podcast moment last month reignited speculation about extraterrestrials and prompted President Donald Trump’s commitment to kickstarting the release of government files on flying saucers. But ...

A week after negotiations broke down, the Pentagon designated Anthropic a supply chain risk, a label typically reserved for ...

Some believe the Betz mystery sphere, a steel ball that a Florida family found on their property in 1974, is a piece of alien technology. Here’s the truth.

A new study published in The Astrophysical Journal argues that “space weather” could be distorting incoming transmissions from extraterrestrials. The paper, penned by researchers at the SETI (Search ...

Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

Chalk up another victory for “Conan the Bacterium”—a rugged germ that fresh research suggests could conquer the solar system.

Mars might have its own defense mechanism against life from Earth, in a kind of reverse of "The War of the Worlds" scenario ...

DENVER—Last month, President Donald Trump took to social media with an announcement that he would direct the Pentagon and other federal agencies to “begin the process” of disclosing government files ...