Space: An Exploration
Discusses facts, mysteries, theories, and activities, about the solar system.
library.thinkquest.org Details

Spanish Language Astronomy Materials Education Center
Recommended materials sorted by type and by grade level (including college and instructor level).
www.astronomyinspanish.org Details

Stanback Planetarium NASA Educator Resource Center
At South Carolina State University. Providing educators with current aerospace and astronautical educational materials.
www.draco.scsu.edu Details

Stanford SOLAR Center
A collection of educational activities and resources based on Solar Oscillations Investigation (SOI) and Solar and Heliospheric Observatory (SOHO) data.
solar-center.stanford.edu Details

Star Gazer Home Page
Home of Jack Horkheimer. The first and only weekly TV series on naked eye astronomy.
www.jackstargazer.com Details

StarQuest
An interactive, student-produced website about astronomy. It covers many areas including general information, astrophysics, constellations, and uses of the color spectrum with astronomy. An image archive of Hubble Space Telescope photos is also included.
library.thinkquest.org Details

Swinburne Astronomy
Online degree granting program in astronomy offering courses for Master of Science and Graduate Diploma of Science. Based in Melbourne, Australia.
www.swin.edu.au Details

The History of Gamma-ray Astronomy
Describes a bit of theory and plenty of actual examples of gamma rays being produced and detected.
imagine.gsfc.nasa.gov Details

The National Schools Observatory
Offers access to professional telescopes worldwide for observations made by school children and teachers.
www.schoolsobservatory.org.uk Details