Learn about the lives of stars, and how stars and planets form. The Interactive activity, 'Planet Families' requires Adobe Flash and cannot be launched.

A university-level course in basic observational procedures in astronomy. Covers how to use a telescope, and includes lecture notes.

This site has activities, games and stories starring the Planet Protector's Club. Find out how kids can help our environment. (Several activities include a Spanish version.)

At this site from HubbleSite you can learn everything you wanted to know about planets like what is the weather on Mars, what is the black eye on Jupiter? Site also provides links to information on the telescope, the rest of the planets,...

This Eight Planets site briefly describes solar wind, a low density stream of charged particles emitted by the Sun. It also provides the basics on the sun's composition and additional sun links.

This complete resource will help students to improve their understand of space exploration. Includes images of the universe, galaxies, stars and planets.

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...

In ancient times only five planets were known: Mercury, Venus, Mars, Jupiter, and Saturn. Learn about Greek astronomer Ptolemy's theory for the solar system that was to survive for fourteen centuries.

If you live in a big city or urban area it is hard to see many stars at night. In most urban areas only the most brilliant stars, planets and the moon can be seen. This is because of something called light pollution which is the...

When you are in the city, only a few of the brightest stars are visible. But when you are in the country, you can see many more stars than you can count. Sometimes you can even see the bright belt of our galaxy, the Milky Way. In this...

Empty space in outer space is not truly empty. Celestial objects fill the space not occupied by planets, stars, and such. This resource identifies these objects and further explains their existence.

Activity in which students create a planet based on distance from a star, age, size, and star type. The created planet is evaluated to determine if it can support life.

In-depth information site on Venus, complete with a thorough glossary, links to a wide array of related sites, thumbnail picture files linked to larger images, and even a short audio file from a classic symphony.

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.

A brief biography of American astronomer and science advocate Carl Sagan.

Celestial navigation is the art and science of finding one's geographic position by means of astronomical observations, particularly by measuring altitudes of celestial objects - sun, moon, planets or stars. This activity starts with a...

This resources focuses exclusively on astronomy. It's packed with historical facts about space exploration, famous people who pioneered the study of stars and planets. It features chronological list of space exploration, current news,...

Invented in ancient Egypt, the plane astrolabe is a tool used by astronomers and navigators to determine time and identifying positions of the Sun, Moon, stars, and planets. Read text or view the video to understand the details of its...

Take this ten-question self-scoring quiz to test your knowledge of astronomy facts: age of the universe, why stars and planets are spheres, where other life might exist in the outer space, the Milky Way, and more.

Figure out your age and your weight on all the planets in the solar system using the formulas given here. Then type them into the correct place, and let the computer check to see if you are correct.

Did you know that ancient astronomers could measure the distance to other stars? They could also distinguish between stars and planets. How could they do that without modern technology of telescopes? See if you can discover the link...

In this interactive module students will explore what different ancient cultures believe was an explanation of the stars and planets. They will look at how the work of Nicolas Copernicus revolutionize the world of astronomy and learn how...

Read about the sights you can see in a clear night sky. Book includes audio narration in 16 additional languages with text in English.

Take a virtual tour of the solar system starting with detailed information about the sun.