A website all about planetary mysteries—it's a one-stop-shop for all things, stars, planets, and space travel. Scholars read an astronomy overview to discover the page's big ideas, then choose from the plethora of resources, including...

Go study the universe. Pupils learn seven aspects about astronomy and astronomers. They begin to learn about constellations; distance and motion between objects; gravity; the electromagnetic spectrum; dark matter and energy; and teams of...

An excellent site dedicated to the constellations and information about the objects which make them up. Contains a great deal of information about various stars, galaxies and other objects, as well as details on how best to observe them.

Is that a lion in the sky? Find out what the constellations are, how they were named, and when stargazers might see specific ones throughout the year.

This NASA site that explains the notable features of stars and constellations, including medium and massive stars. Many terms are clickable links to definitions. There is also a link to the Level 1 version of this site, which is written...

Discover what neutron stars and pulsars are and view pictures of them. Includes links to additional resources and lesson plans.

Site provides a brief introduction to binary stars. Additional resources for students and teachers on this topic are offered as well as related topics.

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...

This resource discusses advanced giants, super giants, and giant stars. Links in the information provide further information on specific terms.

Discusses the formation of the white dwarf and the role this star plays in the formation of a white dwarf supernovae.

A large collection of information about and photos of the starts and constellations in the sky.

This site has factual information about Andromeda. Also contains other links.

Here's a short explanation about the twelve special constellations in the part of the sky called the Zodiac.

"The Rossi X-ray Timing Explorer has discovered neutron stars that emit streams of X-rays pulsing over 1,000 times a second." Visit this site to read the rest of this article. Site offers additional resources as well as a Teacher's Corner.

This site provides detailed history and star cluster location information for each zodiac constellation. Also includes links (mostly to Wikipedia pages) to additional information for keywords that appear in the articles.

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,...

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.

This animation discusses the history of the constellations and the naming according to myths. The specific constellation dealt with in this animation is Ursa Major and Ursa Minor (the bear and the baby).

Under the heading, "Orion's Inner Beauty" this site examines specific details of an image displaying the Orion nebula, which is stated to be "our closest massive star-making factory."

This resource contains information about planetary nebulae and their characteristics.

Under the heading, "Story of Stellar Birth" this site examines specific details of an image displaying the apparent life cycles of young stars in the Cepheus constellation.

Charles Messier (1730-1817 CE) is credited for discovering 13 comets. He also began the Catalog of Nebulae and Star Clusters. This catalog as well as a great deal of information on Messier is available here. The Messier objects are also...

Using the early Dunhuang Star Atlas, an important historical and scientific document of the sky seen from China dating from before AD 700, learn about astronomical history from the perspective of China. Find resources and analysis that...

This site is a good resource to study Astronomy. It has six sessions: the Universe, the solar system, the earth and the moon, history of Astronomy, articles, famous astrologers and a glossary.