Simplify the following text for a Grade 6 native English-speaking person.
Original: The first space mission to Vesta will be NASA 's Dawn probe , which will orbit the asteroid for nine months in 2010-2011 . The mission launched on September 27 , 2007 and will arrive at Vesta in the fall of 2010 .
Simplified: NASA 's Dawn probeâ '' launched on September 27 , 2007 â '' is the first space mission to Vesta .