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

It's one of life's biggest questions – are we alone in the universe? Now, in good news for sci–fi fans, one of Britain's top space scientists has declared she is 'absolutely convinced' there are ...

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

An army airfare major finds something very strange while examine UFO crash site wreckage. See more in this clip from Season ...