The Layers from NASA's Mars Reconnaissance Orbiter (image) University of Copenhagen Share Print E-Mail Caption This is an image in high resolution of the layers from the HiRISE instrument on NASA's Mars Reconnaissance orbiter. These images show that the layers are covered with dust and frost, and the visible layers cannot be directly to examine the internal structure of the ice cap. The researchers have therefore used measurements of the layer thickness and depth in the ice sheet, which can be measured from high resolution images taken in stereo. Credit NASA/JPL/UA Usage Restrictions Credit required Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.