![](https://s.yimg.com/aah/yhst-19624217780865/peacock-crown-12.gif) | ![](https://sep.yimg.com/ca/Img/trans_1x1.gif) | ![](https://sep.yimg.com/ca/I/yhst-19624217780865_2249_27031)
![](https://sep.yimg.com/ca/I/yhst-19624217780865_2249_39703052) ![](https://sep.yimg.com/ca/Img/trans_1x1.gif) ![Sand Dunes and Ripples on Mars](https://sep.yimg.com/ay/yhst-19624217780865/sand-dunes-and-ripples-on-mars-1.gif)
These high resolution images of space scenes are matted to perfection on quality card-stock board and feature a description of the image on back.
From NASA's Mars Reconnaissance Orbiter, we have this image that shows sand ripples in Mars' Proctor Crater. From their study on Earth, and close-up examination by the MER rovers, we know that ripples are composed of fine sand.
Image property of NASA.
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All images © Astrolith Graphic Products, inc. and John C. Wittenberg unless otherwise identified. |
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