This is a Viking image of the surface of Mars. The footpad of the Viking lander is visible in the corner of the image.
Click on image for full size
When we ask "Where might we find life outside of the Earth", the first place many scientists turn to is Mars. Mars may have been like the Earth in its past. No signs of life on Mars have been found, but scientists will continue to search.
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Shop Windows to the Universe Science Store!
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includes issues of NESTA's quarterly journal, The Earth Scientist
, full of classroom activities on different topics in Earth and space science, ranging from seismology
, rocks and minerals
, and Earth system science