Windows to Ancient Mars
NASA/JPL/University of Arizona
Windows to Ancient Mars
ESP_020799_1385  Science Theme: Composition and Photometry
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The Argyre impact basin contains some ancient eroded terrains, exposing rocks with diverse compositions, as shown by the color variability.

These are windows into ancient Mars, which was a wetter world than Mars today.

Written by: Alfred McEwen   (3 February 2011)

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Acquisition date:03 January 2011 Local Mars time:15:44
Latitude (centered):-41.047° Longitude (East):321.685°
Range to target site:255.5 km (159.7 miles)Original image scale range:51.1 cm/pixel (with 2 x 2 binning) so objects ~153 cm across are resolved
Map projected scale:50 cm/pixel and North is upMap projection:Equirectangular
Emission angle:0.3° Phase angle:56.7°
Solar incidence angle:57°, with the Sun about 33° above the horizon Solar longitude:210.2°, Northern Autumn

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