It is difficult for humans to intuitively understand how vast outer space distances are, and the relative speeds at which objects can travel. Some specific comparisons to known objects might help. For instance, how long it has taken our small spacecraft, like Mariner or Voyager, to reach specific destinations. How far away Jupiter is compared to the length of the one year orbital path of the Earth, and how long it takes Jupiter to orbit the Sun. How long it takes Halley's comet to move from its farthest point to 'near' earth and how far away that is as related to your trans-Pluto detection distances. What is the fastest that we have seen any celestial object travel within our Solar System? How long did it take to move from point A to point B? How does that speed compare to the speed of light? I am thinking there may be those who think, "but what if we haven't detected it yet, but it's due to arrive in 3 years? Things can go a long way in 3 years."
Perhaps some of you know the best resources to address this part of the question - not just distance, but speed of travel, and make it more intuitively understandable to ordinary folks experienced only in Earth-scale speeds and distances (tiny in the scheme of the universe, or even of the inner planets).






