- The craters in this image all show different degrees of erosion. Some still have defined outer rims and clear features within them, while others are much smoother and featureless, almost seeming to run into one another or merge with their surroundings.
- At first glance, the image seems to show something amazing in this crater, and in one of its neighbors to the right: is this a hint of blue liquid water? No, it is an optical illusion caused by the image processing.
- The blue-hued patches lying within the ragged craters are actually dark sediments that have built up over time. Again, this is due to the winds, which carry dark, volcanic, basalt-rich deposits across the Red Planet.
Mars Express Sees Strange Craters in Arabia Terra
6. 2. 15 by Jason Hudson