Neptune was the first planet found by mathematical calculations other than observant of the sky. Neptune orbits the sun one every 165 years. It is invisible to the naked eye because of its extreme distance away from us. Because of Neptune's unusual,orbit Pluto enters Neptune's orbit for a 20 year period out of every 248 years. Blue color comes from the methane, and it has a mystery element which makes it bluer.

Diameter: 30,776 miles

Surface Temperature: -253 F

Distance from Sun: 2.8 billion miles

NEPTUNE