Sciences

http://members.aol.com/Ryanbut/illusion1.html
Nine sets of optical illusions together with hints about how to view them
http://www.sandlotscience.com
Numerous optical illusions, together do-it-yourself projects to make your own
Seeing Color
From the Arizona State University's Life Sciences Visualization Group. This site contains many other science articles.

RIC homepage
For use with "The Solar System" workbook
Space Kids
Astronomy information
Web Syllabus
From the Department of Physics & Astronomy, University of Tennessee
NASA homepage
A huge site containing NASA projects and news
Solarviews.com
Views of the solar system
Astronomy at Western Ontario
Homepage of the Astronomy Group at the University of Western Ontario
The Constellations
Detailed astronomical and historical information
Planetscapes
Information and images of all the planets
Hubble Space Telescope
From the Space Telescope Science Institute
Journey Through the Galaxy
A website developed by students for ThinkQuest
StarDome
Auckland Observatory homepage
Exploratorium
Solar eclipse information
The Mars Exploration Program
A NASA site
The Nine Planets
A multimedia tour of the solar system
Space News and Information
From mainstream and alternative sources
Your Sky
Draws a map of the sky from any given latitude and longitude (from Fourmilab in Switzerland)
Human Spaceflight
Another NASA site
ExploreZone
From space.com. The reference area includes a section on space

Volcano World
Choose your volcano...
Volcanoes Online
Plate tectonics, volcanoes, volcanic database, games etc. Another ThinkQuest site.
Planet Earth
A NASA site illustrating how the Earth is changing and how human beings influence, and are influenced by, these changes
The Active Earth
Geology, eathquakes and volcanoes in NZ from the Institute of Geological and Nuclear Sciences Ltd