AIR & SPACE MAGAZINE Castles in the Martian Sand Coming to you in stereo. Image: NASA/JPL-Caltech/University of Arizona March 8, 2010 Matt Hale Get the latest stories in your inbox every weekday.
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/Xanthe%20Terra%20Mars-505.jpg)