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 ...

Some UFO cases remain difficult to explain, but that is only the beginning of the scientific question. The evidence needed to ...

If ancient extraterrestrial explorers ever traipsed through Earth's cosmic neighborhood, it's possible they left behind some interstellar litter in their wake. Think of it like the loose hubcaps on ...

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

Artificial intelligence may have a far stranger origin than Silicon Valley's technological revolution suggests, according to ...

For generations, humans have imagined what it would be like to discover life beyond Earth. Would alien beings look anything like us? Would they communicate through sounds, signals, or something ...