| |
| | World Almanac for Kids |
 | | The average distance of Neptune from the sun is 4,498,252,900 km (2,795,084,800 mi), and its equatorial radius is 24,764 km (15,388 mi), or about 3.9 times that of the earth. |
 | | The effective temperature of Neptune is about -214° C (-353° F), much like Uranus, which is more than 1.6 billion km (more than 1 billion mi) closer to the sun. |
 | | The discovery of Neptune was one of the triumphs of mathematical astronomy. |
| www.worldalmanacforkids.com /explore/space/neptune.html (404 words) |
|