Professor Ed Stone
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Voyager probe moves between the stars

The Voyager-1 spacecraft has crossed a new frontier, becoming the first manmade object to leave the Solar System.

US space agency Nasa has confirmed the spacecraft is now cruising through what scientists call interstellar space - the vast, cold emptiness between the stars.

Mission chief scientist Prof Ed Stone explained why he felt it was a ''historic'' step.

  • 12 Sep 2013
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