[cpayne624]

Parallax, maybe, but no wind = no swirling dust or shifting sands, no?

[jessriedel]

There is in fact wind. Only ~1% as much air as Earth, but it's sufficient to support phenomena like dust devils.

https://science.nasa.gov/science-news/science-at-nasa/2005/1...

Of course, it's very weak, so it couldn't push over a spacecraft or building like in "The Martian", but I suspect sands shifts on a very slow timescale. I'm not sure.

[DiogenesKynikos]

There are "dust devils" on Mars: http://www.esa.int/ESA_Multimedia/Images/2018/04/Dust_devil_....

[robotresearcher]

In the images of the post, you can see these effects of wind-driven sand and dust, such as rippled dunes.

[pier25]

But there is wind, and storms.

[mig39]

Isn't there wind on Mars?