2.  The radius of Neptune is 24,764 km. I know this because the radius is half of the diameter of the circle.

3.  The diameter of Neptune is 49,528 km. I know this because the diameter is diameter = radius times 2 or D=r*2.

4.  The circumference of Neptune is 165- 166. I know this because to find the circumference you need to multiply the diameter by pie=3.

5.  If you were in a airplane flying 900km/h it would take you 165-166 hours to go around once.

6.  The color of the planet Neptune is blue because of the temperature that is in the planet Neptune.

7.  The temperature of the planet Neptune is very cold. If someone was to land and stay they would freeze because the temperature goes to a negative degree.

8.  Neptune has a dark blue spot on it. That is called the blue eye because if you could see it would have a lot of storms inside of it.