This fabulous image of Mars shows the polar cap in the bottom-right corner.
Click on image for full size
This page is the start of the tour which explores the history of Mars' climate. Use the navigation button at the top of the page to move through the tour. To go to the next page, just press the forward link on the navigation button.
Shop Windows to the Universe Science Store!
Our online store
includes fun classroom activities
for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist
are also full of classroom activities on different topics in Earth and space science!