A GERMAN UFO expert has claimed that a NASA spacecraft may have been hijacked by aliens - who are now attempting to contact Earth.

Hartwig Hausdorf claims that Voyager 2 - an unmanned interplanetary probe blasted into space 33 years ago - has started transmitting strange, unintelligible signals, Bild newspaper revealed today

NASA installed a 12-inch disk containing music and greetings in 55 languages in case intelligent extraterrestrial life ever found it.

But last month the probe began sending back distorted messages from its location near the edge of the solar system that baffled NASA scientists were unable to decode, Mr Hausdorf says.