Could the universe have more than three dimensions—and if it does, could life exist there? If higher-dimensional beings are possible, they might interact with our world in ways we can’t fully perceive ...

The sci-fi movie “Disclosure Day” predicts that our reaction to intelligent alien life will be chaotic. But what does the ...

Some of the most common planets in our galaxy may be hiding far more water than scientists can currently detect—even with the ...

Now, an international team of researchers reports in the journal Science Advances that a short time later, a more than ...

In a clip from the BBC’s Wonders of the Solar System, Brian Cox visits an ‘alien’ within a cave that’s a death trap for ...

Alas, it’s not a study-abroad course – yet – but exoplanets may provide insight into how life formed on Earth.

K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

From Nevada’s Area 51 mythology to McMinnville, Oregon’s UFO Fest, alien lore continues to turn curiosity, conspiracy, and ...

NASA’s Viking 1 lander set down in the Chryse Planitia region of Mars. Its identical twin, Viking 2, followed on Sept. 3 of ...

In an experiment to see if AI can detect and even confirm alien life, the answer is a resounding yes. The rest of this ...

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

For the first time in more than 15 years, the International Academy of Astronautics (IAA) Search for Extraterrestrial ...