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 ...

An ominous UFO has breached our solar system and is hurtling toward Earth – and researchers suspect the extraordinary object may be an alien spacecraft sent to survey humanity ahead of an invasion, ...

Polling shows that nearly half of Americans now believe aliens have visited this planet—and that the number who aren't sure ...

Interstellar comet 3I/ATLAS makes its closest approach to Earth this week, sparking alien theories and global interest as ...

Everyone loves a good alien invasion story, preferably one with city-sized ships and physics-defying tech. There's just one big problem with that. The Milky Way is estimated to contain 100 to 400 ...

The man who has staked his reputation—and billions of pounds—on turning humanity into an interplanetary species has a ...