Are humans alone in the universe, or could intelligent alien civilizations exist somewhere beyond Earth? For more than 60 ...

Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

Science fiction suggests that life on other planets, if it exists, is likely far more advanced than life on Earth. A recent study suggests otherwise. Subscribe to our newsletter for the latest ...

Alien life may not need the kind of home humans instinctively search for. Some of the strangest possibilities begin once ...

When gazing at the countless stars shining in the night sky, have you ever wondered about this?"Is there life other than on ...

A new study proposes searching the moon for remnants of ancient extraterrestrial technology. Researchers suggest the moon's surface could preserve microscopic "technosignatures" left by alien ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...

What if aliens were building a massive power plant?Last time, I talked about the "Kardashev scale," which classifies the ...

You might think this column is about UFOs and the Pentagon's recent declassified files. It's not. We're talking about technosignatures, the evidence of alien technology: a radio or laser signal, ...