A fantastic collection of information about the solar system. Includes information on all of the planets, the moon, the sun, asteroids, comets, meteoroids, and stars. Also find puzzles, a dictionary, quizzes, classroom activities, and...

Resource compiles a list of most frequently asked questions about Mercury. Each question is linked to an astronomer's answer. Kids can explore many aspects of this wonderful planet.

Basic facts about the planet Mercury including its size, its name, and its atmosphere. Includes a discussion question on its visibility from Earth, with facts, and the answer. A linked page covers similar material in a "Level 2" version,...

This page from NASA provides a chart of statistical information on planet Mercury. Its mass, diameter, average temperature, and distance from the Sun are among the characteristics listed.

Imagine a time when you can travel through space, planet to planet, cheaply and in comfort, when you can take a trip to the stars as your next holiday. Well, imagine no more. Learn more about the solar system as you take this trip of a...

Here is a clear, simple picture of the solar system. Click on the names of the planets to learn more about each. Clicking on underlined terms takes you to more and more detailed scientific information.

This stunning site on the solar system gives a great overview of the planets and our sun. Learn about each object's size, vital statistics, and moons. Then go on for a more in depth look at these objects in the column on the left.

See what you know about the solar system by taking this brief interactive quiz and learning module.

[Free Registration/Login Required] In this lesson students will compare and contrast the attributes of star, star patterns and planets. Students will also have the opportunity to review facts about each planet and then complete various...

A virtual journey through space offers photos and facts about Earth and its neighboring planets, comets, other celestial bodies of the Solar System, and the Milky Way and Andromeda galaxies.

[Free Registration/Login Required] An informational text about the solar system. A question sheet is available to help students build skills in reading comprehension.

Contains a small set of images of solar system objects and a series of links to information about all solar system objects. Solar System Tours link to excellent image collections.

This interactive tutorial will take students on a tour of our solar system. Students begin near the Sun with the really hot planets of Mercury and Venus. They will learn about Mars, probably the first planet that humans will visit. Next...

A NASA scientist, Dr. Sten Odenwald, answers many students' questions. Topics include planets, galaxies, black holes, the origin of the universe, and common misconceptions about space.

Colorful, engagingly written information about astronomy and biology for Portuguese-speaking English language learners. Both subjects are broken down into a broad array of related subtopics. The biology section is particularly helpful...

Where is our Solar System? How far away is the sun? What makes up the sun? Find out all you want to know about our solar system. This is a comprehensive on-line site about space and astronomy. Check out all of the excitement!

Want to lose weight in a hurry? Just step on a scale on almost any other planet! This page allows you to enter your weight on Earth and it will calculate your weight on all of the other planets, some moons and even some stars. Requires a...