The scientific history behind the discovery of the planet Neptune.

Prepared by NASA, this site provides a detailed look at the planet Neptune. The menu tabs are divided into overview, moons, rings, photo gallery, and facts and figures. Just click to access specific information on any of these topics.

NASA offers a photo gallery of Neptune images. Each image includes a detailed caption describing what the image is of, and the captions are also available in streaming audio.

Kids learn about the ice giant planet Neptune of the Solar System including fun facts, mass, day, year, and distance from the Sun. Astronomy for kids and teachers.

An excellent reference site for the planet Neptune. Loads of images, links to even more detail, a short table of planetary statistics, and lots of information.

Wikipedia, a publicly-maintained encyclopedia, provides information on the planet Neptune, including physical characteristics, exploration, moons, and more. Additional links provided.

Resource provides a deeper look at the planet Neptune. Just click on the frequently asked question link and dive into knowledge.

A basic overview of the planet Neptune. Links to information about the other planets and objects in our solar system are included.

Explore the planet Neptune through this site that includes vivid multimedia resources. Learn Neptune statistics and view numerous images.

A good general introduction to planet Neptune for students. Has many links to more detailed information about the planet throughout the page, as well as special links for interesting facts. Also features a printable version of the page.

This survey of the planets includes all the basics, size, mass, atmosphere, length of day, and the like. It features interactive activities and learning exercises and compares all of the planets in colorful tables.

Take a tour of our solar system and learn fascinating details and observations about the planets.

A cool fact sheet about Neptune including a place for students to enter their weight on Earth to convert it to what it would be on Neptune.

Discover interesting facts about Neptune, the fourth-largest planet.

Learn fascinating facts about Neptune, the last of the planets in our solar system.

As technology has advanced, so do our views and understanding of the solar system. No longer do we have to rely on our unaided eyes to observe planets. View these high-quality images of planets provided by NASA spacecraft.

Collection of images, with vocalized explanatory captions, of the planets acquired by NASA as part of its exploratory space programs.

A quick overview of the eight planets in our solar system.

This activity explores the relative size of the eight planets that circle around the Sun.

Learn the basic details about the planet Neptune! The brief, to the point text makes this site most suitable for younger researchers.

Get to know the twin of Neptune with this introduction to Uranus. Listen to the information in an audio file. Features include a printable version of the page, and vocabulary words are linked to a glossary of terms.

Resource has text information to compare Neptune with Earth. Includes Neptune observational data, orbital data, magnetosphere, and atmosphere. Also contains an image of Neptune that can be enlarged.

An excellent report on the planet Uranus. The site includes detailed information about the planet as well as links to information about Uranus moons, unmanned probes sent to explore Uranus, and an extensive set of images of the planet.

A detailed overview of the history, mythology, and current scientific knowledge of each of the planets and moons in the solar system.