The Solar System
This is a small series that displays the distances the planets are from the sun on a scale of one meter to a million kilometers.
So every meter you walk is a million kilometers.
Rutherglen's Bottle represents the sun on this scale. Except that it should be about 1.4 meters in diameter not 9 meters.
There is a traditional cache for each planet (even Pluto gets a guernsey!)
When you reach Pluto you have traveled 5.9 billion kilometers.
Enjoy the walk (bike ride, or most likely 4WD).
The Planet
Pluto, discovered in 1930 is a tiny world smaller than the Earth's Moon. Charon, one of its five moons, is half the size of Pluto.
Beyond Neptune are tens of thousands of asteroids of ice and rock left over from when the planets were formed. This asteroid belt is called the 'Kuiper Belt'. In 2005 Kuiper Belt Object (KBO) larger than Pluto was located and named Eris. Now we realise that Pluto is just one of these large asteroids or 'Dwarf Planets'.
The New Horizons spacecraft reached Pluto in July 2015, after a nine year voyage, to study Pluto, Charon and other KBO's. Part of Pluto's orbit can be closer to the Sun than Neptune.