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

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

With over decades of films and convincing radio plays, aliens have captivated our imaginations and our worst fears. They’ve come in all shapes and sizes, looking either cute and cuddly or absolutely ...

You might think this column is about UFOs and the Pentagon's recent declassified files. It's not. We're talking about technosignatures, the evidence of alien technology: a radio or laser signal, ...

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 ...