Get ready to pull over on the left hand side of the road in 1.5km. Neptune is coming up. You don't have to stop, but if you want to you can prepare to pull over safely.
On this drive along the Virtual Solar System Model, Neptune is located up to 133 kilometres from the Siding Spring Observatory and the Anglo Australian Telescope dome which represents the Sun.
In the real Solar System, Neptune is 4508 *million* kilometres from the Sun!
Remember, that on this drive the actual size of the planets, and the distance between them is to scale. It is amazing that a planet this size, and so far away, was ever found!
Neptune, named after the Roman god of the sea, was observed by Galileo in 1613 but mistakenly thought to be a star. Its largest moon, Triton, orbits the opposite direction to all other planets’ moons, and it rotates on its axis in the opposite direction to Neptune’s rotation. With a temperature of minus 233°C, Triton is also the coldest place in the Solar System.