Build your own inexpensive, color filter wheel and use it to study an image of the Crab Nebula! Discover why scientists use different filters to study astronomical images. View several images of the Sun as seen through different solar filters.
A comprehensive (and fun!) site about multiwavelength astronomy from Cool Cosmos at the Infrared Processing and Analysis Center and the SIRTF Science Center.
By observing the Sun in many different wavelengths, including x-rays, solar physicists are able to piece together the sequence of events that make up a solar storm. This link takes you to a "word-find-like" puzzle where you can learn more about solar storms and hunt for solar storm sequences for yourself.