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Sending a satellite to Jupiter?

  1. Jan 18, 2015 #1
    1. The problem statement, all variables and given/known data
    "In order to launch a space probe out of the solar system, it is decided to send it close to Jupiter. Why does this reduce the amount of fuel needed?"

    2. Relevant equations


    3. The attempt at a solution
    I can't think of anything at all. I am trying to think in terms of it gaining kinetic energy, but because gravitational fields are conservative, it seems to me that however you choose to approach another planet and whatever planet it approaches, the probe will gain a certain amount of kinetic energy approaching the planet but lose the exact same amount leaving the planet? Perhaps it could be something to do with rotation of Jupiter?

    Thanks in advance :)
     
  2. jcsd
  3. Jan 18, 2015 #2
    The "explanation" portion I think sums it up pretty well. Its also not too long of a read so I just decided to post the link rather than try and explain it and potentially screw it up lol.

    http://en.wikipedia.org/wiki/Gravity_assist
     
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