Gary, see http://en.wikipedia.org/wiki/Gravitational_slingshot Robert > -----Original Message----- > From: geocentrism-bounce@xxxxxxxxxxxxx > [mailto:geocentrism-bounce@xxxxxxxxxxxxx]On Behalf Of Gary Shelton > Sent: Sunday, February 13, 2005 10:41 PM > To: geocentrism@xxxxxxxxxxxxx > Subject: [geocentrism] Gravity Slingshots? > > > > Dr. Jones, > > I remember actually hearing the explanation for a slingshot on network tv > during what would have otherwise been and enjoyable cartoon time. Never > liked the moon launches for that reason. > > Looking at them now it is easy for me to gravitate (pun intended) to the > word "preposterous", but this does leave me close-minded the proponents > would say. Therefore, I'll remain open enough to hear the > reasoning, but I > can't off-hand see how it would gain momentum for the reason you > spelled out > to Philip below. > > Whenever one tries to maintain a curve in a car at a steady > speed, and then > speeds up, does he not risk flying off the boundary of the curve? > Then what > direction is he going? > > Of course, one could argue easily that I am neither a professional driver > nor a trained astrophysicist, but it seems a very difficult proposition to > have a space probe match a planetary rotation at the right height off that > planet so that the whole thing works. > > I am open, but I'd like to have that explained.... > > Sincerely, > > Gary Shelton > > > > > Philip, > > <snip> This is why I said that the acceleration it received on approach > would be completely negated by the deceleration it experienced on > recession. > > > > Besides all this, the accuracy required for this science fiction > manoeuver, over billions of kilometres, is absurd. I will not produce > detailed mathematics on the forum, because many would not follow it. I > appeal to your common sense and everyday experience instead. > > <snip> > > > The alleged probe would be pulled back, with a force that is > basically the > same strength and the opposite direction to that which it would have > received on approach. Gravity slingshots are nonsense. > > > > Neville. > > > > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.8.7 - Release Date: 2/10/05 > > >