ΣΥΝΕΧΙΖΟΥΜΕ...

ΣΥΝΕΧΙΖΟΥΜΕ...
ΣΥΝΕΧΙΖΟΥΜΕ...

Σάββατο 16 Νοεμβρίου 2013

Pictures from Space

Prominent patches of wind-blown dust, possibly mixed with volcanic ash, radiate from Martian Becquerel crater and into a neighbouring crater. The streak of dust following a radial path likely traces out a gentle topographic depression, beyond the eroded rim of the neighbouring old crater.

The Noctis Labyrinthus region of Mars, perched high on the Tharsis rise in the upper reaches of the Valles Marineris canyon system, on Sept. 26, 2013. Targeting the bright rimmed bedrock knobs, the image also captures the interaction of two distinct types of windblown sediments. Surrounding the bedrock knobs is a network of pale reddish ridges with a complex interlinked morphology. These pale ridges resemble the simpler transverse aeolian ridges (called TARs) that are common in the equatorial regions of Mars. Dark sand dunes comprise the second type of windblown sediment visible in this image.^

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