Our search for extraterrestrial life has turned up empty, perhaps because technologically advanced civilizations are doomed ...

Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures?

Are aliens real? The question has animated conspiracy theories for decades and enthralled at least one former president of the United States. In a recent interview, Barack Obama became the first ...

Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million people banded together in a real-time search for aliens -- with screensavers.

For decades, humanity has been looking for answers to unravel the mystery surrounding aliens’ existence, but they have failed ...

So many things had to happen for us (humans) to end up here (Earth). Our species is made possible because a water-filled planet orbits a particular distance away from a star of a particular size.

Astronomers made headlines last week by suggesting potential signs of life on the distant exoplanet K2-18b—but is this truly our first glimpse of extraterrestrial beings, or simply wishful thinking?

According to best-selling author Yuval Noah Harari, "alien intelligence" is a more accurate term for AI than artificial intelligence. See AI anxiety. THIS DEFINITION IS FOR PERSONAL USE ONLY. All ...

The Drake Equation helps scientists estimate the odds of finding intelligent alien civilizations. It’s an age-old question: Do aliens exist? And what are the odds we’ll make contact? A famous ...