|
I think the thing you need to know about is the escape velocity of the solar system, which is just over 73km/s (hmm, might be wrong on that but will check later, but the concept stays the same.) If the Voyagers have escape velocity, which I think they do, they'll just keep on going. Same with comets, like the speccy McNaught the other year - it looped around the sun and gained too much speed and will now just keep on heading out and not return. Other comets have been known to do that too.
|