Arts Universe and Philology

Arts Universe and Philology
The blog "Art, Universe, and Philology" is an online platform dedicated to the promotion and exploration of art, science, and philology. Its owner, Konstantinos Vakouftsis, shares his thoughts, analyses, and passion for culture, the universe, and literature with his readers.

Τετάρτη 7 Νοεμβρίου 2012

Οι παγετώνες του Άρη, Nereidum Montes helps unlock Mars’ glacial past


This computer-generated perspective view was created using data obtained from the High-Resolution Stereo Camera (HRSC) on ESA’s Mars Express. Centred at around 40°S and 310°E, the image has a ground resolution of about 23 m per pixel. This perspective view highlights many of the rippled sand dunes which form on the leeward (wind-sheltered) sides of mounds and canyons, as well as the lobate and fan-shaped surface around the impact crater which dominates the lower portion of the image. These features may indicate the previous extent of glaciation in the region, before a drier period in the planet’s history created the smooth plains. Taken during revolution 10736 on 6 June 2012.  Credits: ESA/DLR/FU Berlin (G. Neukum)

Ο δορυφόρος Mars Express του Ευρωπαϊκού Οργανισμού Διαστήματος (ESA) έστειλε μια λεπτομερή εικόνα από μια περιοχή του Άρη την οποία κάποτε κάλυπταν παγετώνες. 


High-Resolution Stereo Camera (HRSC) nadir and colour channel data taken during revolution 10736 on 6 June 2012 by ESA’s Mars Express have been combined to form a natural-colour view of Nereidum Montes. Centred at around 40°S and 310°E, the image has a ground resolution of about 23 m per pixel. It shows a portion of the extensive region, with concentric crater fill in many of the craters towards the east (lower part of the image). Undulations in crater floors are commonly seen in mid-latitude regions on Mars and are believed to be a result of glacial movement.  Credits: ESA/DLR/FU Berlin (G. Neukum)


Η εικόνα ελήφθη στις 6 Ιουνίου στην περιοχή Nereidum Montes και οι ειδικοί που τη μελέτησαν κατέληξαν στο συμπέρασμα ότι οι κυματισμοί στο έδαφος και ειδικά στον πυθμένα των κρατήρων είναι αποτέλεσμα της κίνησης παγετώνων. Η ανακάλυψη προσφέρει νέα στοιχεία για το γεωλογικό και κλιματικό παρελθόν του Κόκκινου Πλανήτη.

Η περιοχή όπου κάποτε υπήρχαν παγετώνες στον Άρη. Δείτε και ένα σχετικό βίντεο για την εποχή κατά την οποία υπήρχαν πάγοι στον Κόκκινο Πλανήτη.


ESA's Mars Express found layers of water ice and dust at the Martian north pole, and crater containing water ice. The ice is definitely frozen water since carbon dioxide ice had already disappeared from the north polar cap at the time the images were taken (late summer).




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