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• THE LUNAR EXPLORER ARCHIVES
• MOON
• MARS
• SOLAR SYSTEM
• DEEP SKY

A R C H I V E S

This image shows Knobs and Bluffs that are being actively eroded by the action of tyhe almost perpetuous Martian Winds. Fine, light-toned Sedimentary Layering is exposed in the Bedrock at the base of the visible Cliffs. Also in this scene are two types of Unconsolidated Aeolian Sediments. The Reddish Ridges are relatively immobile, and are probably similar to the Granule Ripples that can be found on Earth (and which are protected from the Winds by a Surface Layer of Coarse Grains). The Dark Dunes are probably made up of fine (such as approximately 0,1 millimeters) Basaltic Sand. Other HiRISE images (see, for instance, the frame PSP_001756_1995) show that the Sand Dunes existing within Pasteur Crater are currently mobile and, in fact, such a Sand is thought to be locally derived from Dark Sand Deposits existing within a small Crater called Euphrates, located within Pasteur, and in an upwind position as to the aforementioned Sand Dunes.

Mars Local Time: 14:45 (Early Afternoon)
Coord. (centered): 19,3° North Lat. and 24,2° East Long.
Spacecraft altitude: 286,2 Km (such as about 178,9 miles)
Original image scale range: 57,3 cm/pixel (with 2 x 2 binning) so objects ~ 1 mt and 72 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 7,3°
Phase Angle: 46,1°
Solar Incidence Angle: 39° (meaning that the Sun was about 51° above the Local Horizon at the time that the picture was taken)
Solar Longitude: 48,1° (Northern Spring/Southern Fall)
Credits: NASA/JPL/University of Arizona

This frame has been colorized in Absolute Natural Colors by (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Mars Reconnaissance Orbiter and then looked down, towards the Surface of Mars), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.