You are here: Main > Space > Neptune


The 8th planet from the sun.

wpe6.jpg (5094 bytes)

Neptune Facts:
  • Neptune is the 8th planet from the sun in our solar system.   It is approximately 2,794 million miles from the sun.
  • Neptune is about 30,775 miles in diameter.
  • It takes Neptune about 165 Earth years to orbit the sun one time.
  • A day (from sunrise to sunset) on Neptune is only about 16 hours.
  • Neptune's atmosphere is made up of hydrogen, helium, and methane.  The methane makes it look blue in color.
  • Neptune has 6 thin rings around the planet.  Some of the rings do not look complete because they are thicker and thinner in some places.
  • The average temperature in Neptune's atmosphere is -370 F.
  • Neptune has at least 8 known satellites, or moons, and there may be more.
  • In 1994, the Hubble Telescope discovered dark spots on the surface that were caused by storms and changes in temperature.   The Voyager 2 spacecraft discovered wind speeds of 1,500 mph (2,400 k/ph) on the planet's surface.
  • Neptune is named after the Roman God of the oceans.

All images from Microsoft Office Clip Art and Gallery licensed through Microsoft Front Page and Microsoft.
Microsoft Encarta '97 Encyclopedia

Astro for Kids,

Please do not copy information, text, or images from this site without permission.
Copyright 1999-2004.