NASA
Nasa Star Child: Mars, the Red Planet (Level 2)
A general introduction to Mars. Includes a glossary of terms and two images of Mars. Many interspersed links to more graphics and more detailed information about the planet Mars. Also includes a printable version and links to other...
NASA
Nasa: Welcome to the Planets Mars
NASA offers a photo gallery of Mars images. These images include a detailed caption, each available in audio.