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For Mars' current position and visibility, see the Planet Wheel
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Mars has a diameter a little more than half that of
Earth. Nonetheless, because it has no oceans, its total
land surface is similar to that of our own planet.
A view down into the Valles Marineris, an immense complex of valleys more than 4,000 kilometres in length, running between the volcanic
plains of Tharsis and the densely cratered landscape of Chryse.
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The cold desert world of Mars lies further from the Sun than Earth. Considerably
smaller than our own planet, Mars' atmosphere consists mainly of carbon dioxide.
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Key features on the western (top) and eastern (bottom) hemispheres of Mars.
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The broken and icy north polar region of Mars. Prominent against the whiteness is the
dark gouge of the Chasma Boreale, the North Canyon.
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