The unusual specimen raised eyebrows because it appeared capable of causing levitation. An official investigation has not settled the matter, some UFO enthusiasts say.

Harvard University professor says encounter could be ‘a blind date of interstellar proportions’ Incoming ‘comet’ could be alien technology and a threat to humanity, says astronomer An interstellar ...

What if humanity’s first unmistakable sign of alien technology is not a greeting, but a distress flare? That possibility sits at the center of a growing idea in technosignature research: the signals ...

IMAGES of an unusual pyramid-shaped structure on Mars that look like those in Egypt have reignited wild theories about aliens living on the planet. All sorts of bizarre objects have been spotted ...