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.

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.

This site provides an introduction to the origin of the universe for the young child and the Big Bang theory. There is also a song about the Doppler Shift. Vocabulary glossary and printable version available.

Bite-size introduction to two scientists-Hubble and Lemaitre-who played key roles in formulating the theory of the origin of the universe known as the big bang. Includes an interactive timeline on which you can plot out the approximate...

The Universe is very diverse and contains many unique elements that can be observed in this gallery of pictures.

A video and a short multiple-choice quiz on the Universe and what it is made up of.

A list of answers to many questions related to quasars and active galaxies.

The story of the universe is told in this engaging site by the European Space Agency. The history of European space science is timelined with dates ranging from 1066 to present day. The birth of galaxies, the big bang, and the beginnings...

What does the universe look like? This website offers visitors a collection of images that serve as an "atlas" of our universe. See multiple charts showing the Earth's distance from the Sun and other stars, find helpful terms in a...

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.

Travel the universe and learn about galaxies. Investigate Hubble Deep Field observations to learn more.

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.

This journey will help you solve big questions about the universe. You will be able to see beyond human capabilities and will learn what scientists are discovering.

At this site from HubbleSite you can learn all about galaxies and black holes. Click on the movie link and discover how old the universe is or study about what happens when two galaxies collide!

This multimedia tour is extremely dense with information about the origin of the universe. There are videos and simulations to assist with understanding, but it is definitely for advanced students.

This site from the University of Cambridge allows you to view information on spiral, elliptical, and Milky Way galaxies, as well as galaxy clusters. Provides basic facts about each one.

Fun site containing information about the world created by the book. Also contains links to information on the author, Douglas Adams.

This site examines the black hole as an object in astrophysics. Delve into this comprehensive resource that covers this concept from its history, to qualitative physics, the reality of black holes, mathematical physics and more.

At this site from HubbleSite you can discover the universe by taking a look back toward the beginning of time. Site contains links to information on planets, stars, galaxies, and much more.

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

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,...

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.

PBS site provides various views of spiral galaxies. (Quick Time required) With this technology, you can manipulate the image to spin it around and look at it from various angles.

Find out how galaxies are classified and then see if you can apply that knowledge to identify the different types of galaxies. In addition to explaining Hubble's galaxy classification system, the site has links to Hubble Space Telescope...