About Mars then and Now
URL: http://antwrp.gsfc.nasa.gov/apod/ap031112.html
Submitted: Tue Oct 19 2004
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CT: Space Objects and Comets: Mars Controversy: About Mars then and Now
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Explanation: Does Mars have canals? A hot debate topic of the late 1800s, several prominent astronomers including Percival Lowell not only claimed to see an extensive system of long straight canals on Mars, but used them to indicate that intelligent life exists there. The relatively close opposition of 1894 was used to make drawings like the one digitally re-scaled on the above left.