Comment Re:Hmmm..... (Score 1) 339
Random out-the-ass idea, but being that most of these flight paths use the gravity of planets (ours and others) to sling them for fuel-free acceleration, is it possible that we've incorrectly measured the mass of a planet (or planets), or perhaps they have changed since the time they were measured for use in their calculations? A more massive planet would give a bigger gravity assist, would it not?