Scientists propose examining lunar soil for tiny engineered particles that could preserve evidence of civilizations long since vanished.

Some people treat the idea of aliens as nonsense, but scientists actually believe that the notion we're alone in the entire ...

If ancient alien explorers ever traipsed through Earth's cosmic neighborhood, could it be possible they left behind some ...

Microscopic bits of alien tech on the moon? As scientists searched for intelligent extraterrestrial life — i.e., aliens — they’ve focused on a short list of standard possibilities. In other words, ...