This set of activities teaches students about the big picture of science using Mars as an example: how to collect data, use evidence, and look at models.

This site from the National Aeronautics and Space Administration provides the opportunity to solve a crossword and learn about the world's biggest telescopes.

Find out about all the planets and other solar system characteristics in this colorful, illustrated tutorial on our neighborhood in space.

This site from IPAC is a series of images of various celestial objects and regions as viewed in infrared light. Each photo is accompanied by a caption.