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 ...

An artist's impression of a planet orbiting the yellow, Sun-like star HD 209458, 150 light-years from Earth. About10 percent of the known planets circling suns in the galaxy resemble Earth, which ...