Launched directly into an Earth-and-solar-escape trajectory with an Earth-relative velocity of about 16.26 km/s it set the record for the highest velocity of a human-made object from Earth. Using a combination of monopropellant and gravity assist, it flew by the orbit of Mars on 7 April 2006, Jupiter on 28 February 2007, the orbit of Saturn on 8 June 2008; and the orbit of Uranus on 18 March 2011. Its secondary mission is to fly by one or more other Kuiper belt objects, and then the heliosphere. It is expected to become the fifth interstellar probe and second fastest in the history of space exploration.
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