A mysterious metal shard, once thought to be a piece of a UFO that crashed in 1947, has sparked years of wild speculation.

The unusual specimen raised eyebrows because it appeared capable of causing levitation. An official investigation has not ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Senior figures from inside the U.S. military and intelligence world are now openly suggesting that the government has encountered technology and even “biologics” that are not human, even as official ...