Geocache coordinates: 47.5799, -122.5257
Distance from the Sun: 2,798,000,000 mi
Diameter: 30,600 mi
Modeled distance from the Sun: 16,170 feet
Modeled diameter: 2.1 inches
Neptune is the eighth and last planet in our solar system. Neptune has one of the longest years in our Solar system, getting a birthday only every 165 Earth years! Neptune also has the second largest gravity of any planet, coming in just behind Jupiter.
In our model, Neptune has been shrunk down to 2 inches in diameter, just about the size of a pool ball. Remember that Earth in our model is a small marble!
Neptune is a gas giant, and made primarily of hydrogen and helium.