Q:  What is the GPE of the Sun-Moon system?


              GPE  =  -6.5 x 10^(31) J




      Q:  How much KE does the Moon have as it orbits the Sun?


              KE(now)  =  3.3 x 10^(31) J


      Q:  How much MORE KE must one give the Moon to cause it to escape?


              KE(added)  >=  3.3 x 10^(31) J