In this project, you will estimate the circumference of the earth, using a method developed about 2,200 years ago, by Eratosthenes, a Greek mathematician and the librarian of the great library at Alexandria, in Egypt.

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how our understanding of the Earth's movements evolved from ancient times and what we know today. Includes some questions to check...

Great lesson plans covering a wide-range of science-related subjects. A wonderful resource for wonderful teachers!

Want to stretch your imagination? One good way is to try to imagine how far it is to a distant star. How much farther away is it than the moon is from the earth? In this project, you'll learn one way of measuring the distance without...

The sun sometimes releases huge bursts of electrified gases into space. These bursts are called coronal mass ejections (or CMEs). When CMEs are directed towards Earth they can generate auroras, the spectacular atmospheric displays also...

Reach for the stars by checking into the career as an astronomer. This Science Buddies site lays out the requirements needed to become an astronomer, as well as the education and job description. Included are interviews with people who...

In this astronomy science fair project, investigate how the earth's axial tilt creates seasons. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction, followed by a section on...

Kids learn about sunspots, solar winds, and solar flares in the science of astronomy. What they are and how they affect Earth.

This site is astronomy for kids and teachers! Here students can learn about the planet Earth of the Solar System including fun facts, mass, day, year, and distance from the Sun.

This kinesthetic activity will demonstrate concepts like rotation and orbit, clarify movement and direction, and help students understand why earthlings see different things in the sky.

Besides an introduction to exhibitions and events at the museum, the site provides a guide to stargazing, an astronomy FAQ, space news, virtual tours (see site map) and research resources (including Chinese-English star and constellation...

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.

An article explaining how the Greeks were able to use their science and mathematics to predict where astronomical objects such as the Planets could be found in the nighttime sky even though their underlying premise was that the earth did...