These barchan dunes have been imaged at least five times already, and each time, a bit more movement is revealed.
from HiRISE: High Resolution Imaging Science Experiment http://ift.tt/1Vt9dLW
via IFTTT
These barchan dunes have been imaged at least five times already, and each time, a bit more movement is revealed.
from HiRISE: High Resolution Imaging Science Experiment http://ift.tt/1Vt9dLW
via IFTTT