Dark spots, some as large as 50, 000 miles in diameter, move across the surface of the sun, contracting and expanding as they go. These strange and powerful phenomena are known as sunspots. This resource will allow you to explore the nature of sunspots and the fascinating history of our efforts to understand them. Included here are interviews with solar physicists and archeoastronomers, historic ...

International programme for sunspot observation of amateurs and professionals. Volkssternwarte Paderborn e.V., Germany ...

A good introduction to sunspot activity.

A brief description of sunspots with a directory of sunspot-related news articles.

The photosphere often has dark spots on it. The spots are sunspots. They were first observed by Galileo when he looked at the Sun with a telescope (hopefully by projecting the image on a piece of paper!). Here is how it might have looked to him.

Educators K-12 Involvement JPL Surplus Equipment Newsletters Opportunities Public Tours Speakers Bureau Community Colleges Colleges/ Universities Students Informal Education Educator Resource Center Team Competitions About JPL Education NASA Education Links News Classroom Activities Educator's Guide to Sunspots Spotting Sunspots Naked eye observations of the Sun will result in blindness. The ...