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

A planet with twice Earth's gravity produces creatures with different skeletal requirements, different muscular architecture, ...

From Project Hail Mary to Independence Day, Alien to Arrival, these alien movies are much better than Disclosure Day.

With the release of Disclosure Day, Steven Spielberg’s new film about aliens, a question as old as science fiction itself resurfaces: if aliens were to arrive on Earth, would they come to conquer us, ...

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...

What if an alien species had a complete evolutionary history stretching billions of years? This deep dive explores the Yaetuans, from microscopic lifeforms to a civilization capable of reaching the ...

Scientists suggest that advanced aliens might not have physical bodies, challenging traditional views of extraterrestrial ...

Alien director Ridley Scott eventually returned to the franchise, but couldn't complete his ambitious plans. Here's what his unmade movie could have been about.

Theological debates suggest alien encounters might challenge religious traditionalists more than dismantle faith.

A siphonophore—a colonial marine invertebrate related to the venomous stinging Portuguese Man-o-war—is scanned using Deep ...

Luke Bracey and Crosby Fitzgerald discuss "Little House on the Prairie," on Netflix Thursday, and portaying the Ingalls as an ...

A mind wrapped in skin and bone can feel like the obvious model for consciousness. But that assumption may say more about where you live than about what consciousness really requires.