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.

Ever wonder if we are alone in the Universe? How are scientists searching for alien life? Learn the answers to these questions and find out about other solar systems.

Read about the evolution of the stars, the elements of the solar system and the evolution of the Universe.

This site from University of California is an introduction to crinoids with pictures. Click on another link to learn about the history and ecology, fossils, or morphology.

You can find out the conditions for a thunderstorm, the life cycle, types, and wall clouds.

This site from Stanford University shows how you can learn how the entertainment industry sends both positive and negative messages concerning substance use through movies and music. This article summarizes government research that...

See if you can solve this challenge with a 5 point star. What about a 6 point star? 7? 8? 9? The one page website gives you the solution so that you can check your answer.

At this site from the Astronomy Department of Cornell University, Kepler's three laws of planetary motion are stated. There are brief explanations of each, along with links to additional information on related subjects.

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...

This diagram shows a universe timeline as suggested by many scientists and theoretical physics experts. This popular timeline of the universe has different stages which include: quantum fluctuations, inflation, dark ages, first stars,...

Students are given instructions on how to construct a paper, uniform polyhedron in the shape of a star ball. Animation is used to show the steps to make the star ball. There are also additional modules for other shapes and discussion...

Students are given instructions on how to construct a paper, uniform polyhedron in the shape of a star ball. Animation is used to show the steps to make the star ball. There are also additional modules for other shapes and discussion...

Explore the universe and celestial phenomena made visible by Hubble. High-quality photos of planets, stars, nebulae, and galaxies, complete with individual descriptions, can be viewed online and downloaded for printing and personal use.

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...

A collection of audio lectures from an introduction to astrophysics course taught at the University of California, Berkeley. The course discusses the solar system, stars, quantum mechanics, gravitation, and cosmology focusing on how...

College-level online course highlighting the study of classical mechanics. This course focuses on Newtonian mechanics, fluid mechanics, and kinetic gas theory. Course features include a 35 video lecture series by Walter Lewin. Also link...

Antimatter, the charge reversed equivalent of matter, has captured the imaginations of science fiction fans for years as a perfectly efficient form of energy. While normal matter consists of atoms with negatively charged electrons...

The Hubble Space Telescope has provided the world with incredible information that has helped formulate our knowledge of the universe. This telescope will soon be retired and replaced by a newer, more powerful telescope. Read about the...

This Cornell University Astronomy Department site surveys the the hydrogen and helium burning that takes place in the evolution of a red giant. Links to related information.

Learn multiplication with this dial star exercise. Predict what shapes you will get with different numbers.

Learn about the animals who have been used in space missions, what each of their purposes were, and which vehicles took them to the stars.

A comprehensive site that looks at the different types of echinoderms, their life history and anatomy.

Learn about the life and work of English pop star-turned-physicist, Brian Cox.

This site features excellent links to lesson plans and activities for the book "Cry, the Beloved Country."