An image of a quasar. The large redshifts imply that quasars lie near the edge of the observable universe and must emit tremendous amounts of energy. There are also many embedded links to related topics.

How big is a billion? Find out some interesting facts about our galaxy, the Milky Way, and its billion stars.

Kid's learn about the science of Galaxies. Large groups of stars such as the Milky Way throughout the universe are an interesting part of astronomy.

This interactive activity from NOVA Online lets you spin a spiral galaxy, including our own Milky Way. It demonstrates that what you can learn from visible light observations of a galaxy is largely determined by the angle from which you...

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!

In this module you can learn about galaxies, their morphology classification, masses, distances, etc.

Examine colliding galaxies with this science simulation that demonstrates how galactic bridges are formed and how galactic cores are made up.

Learn how and when to look up into the sky to see the Andromeda galaxy.

Kids learn about the glossary and terms for the science of astronomy including words and definitions such as asteroid, comet, meteoroid, galaxy, eclipse, etc.

This site from the Cambridge Relativity provides a brief description of the structure of the Milky Way galaxy. The parts described are the disc, bulge, and halo.

This Imagine the Universe site provides an introduction into the multiwavelength universe and astronomy. Site provides graphics, links to a quiz, facts on this topic as well as teacher resources.

This site provides information about quasars and active galaxies. Includes a glossary of important terms.

View satellite photographs of the Andromeda Galaxy.

Biographies of people throughout history who looked at the sky and wondered what was there. Links to a detailed description of the planets and interactive activities.

Young children can find facts about the Solar System, the Sun, meteorites, stars, galaxies, planets, our moon, comets, asteroids, and space exploration. Pages offer clear photos and bullet-point information, which is easy to read and...

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,...

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.

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

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.

In this module you can learn about the active galaxies, quasars and the effect of the gravitational lens.

Learn about our galaxy, their mass and the evolution of the various theories about their conception.

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...

Site recounts how X-rays were discovered as well as who discovered them. Offers graphics, links to facts on this topic, a quiz, and teacher resources.

Chandra allows astronomers to view our galaxy and beyond in ways only dreamt of before. 14 interactive features are offered in this exciting look at cosmic phenomena.