SOLAR SYSTEM · 2023-03-16
Southern Dunes
Repeated dark forms make this Martian surface readable as a pattern before it becomes readable as a place.
What to observe
- Look for a shared direction across the repeated forms.
- Notice where the pattern changes near larger terrain.
Explanation
NASA’s 2001 Mars Odyssey spacecraft imaged dunes in the southern highlands of Mars. Their repeated shapes record interactions between loose material, wind and surrounding topography.
Color method
This is a visible-light THEMIS observation. Its contrast makes the dune field and the shallow remains of an older crater easier to separate.
Why it matters
Texture can suggest a process, but scale and instrument metadata are needed before assigning a location or material.
Sources and credits
Asset credit: NASA/JPL-Caltech/ASU / JPL