From the February 2008 issue

Do any two photos taken of the same location on Mars at two different times show surface changes?

Bob Fandrich, Palm Bay, Florida
By | Published: February 1, 2008 | Last updated on May 18, 2023
Scientists analyzing the hundreds of thousands of images of Mars’ surface have seen evidence of changes with time. At the telescopic scale, we’ve seen the famous dark markings of Mars change over the decades, as windblown dust moves across dark volcanic rocks and sand.