Exploratour - Comparing the Surfaces of Earth and Mars

Mars is about 1/3 the size of the Earth, as shown in this drawing.
NASA

This page is the start of the tour which compares the surfaces of Earth and Mars. In this tour we will describe and compare some features of the surfaces of both Earth and Mars. Use the navigation button at the top right of the page to move through the tour. To go to the next page, just press the forward link on the navigation button.

Mars is much smaller than the Earth, and has no oceans, trees or other visible forms of life on the surface. We will show in this tour, however, that Mars has many of the biggest things in the solar system - the biggest volcano, the deepest hole in the ground, and the biggest canyon.


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Generous sponsorship of Windows to the Universe is provided by the Hewlett Foundation, the American Geological Institute, the American Geophysical Union, the National Science Foundation, NASA, NCAR, and the CISM and CMMAP projects. NASA CMMAP AGU CISM NCAR Hewlett AGI NSF