Scientists say there is (circumstantial) evidence of flowing water on Mars.
Lets go colonize Mars, then we can screw up that planet also!
😉
I read that article yesterday. They can actually see seasonal variations in the photos where the water flows in the warmer months and freezes back up in the winter.
here's a better picture of the flow:
from this article:
I thought it was this:
Those type of marks could also be caused by wind, sun, heat cracks, solidification of the material, kind of resembles the type of cracks you can get from something like sheet rock mud drying to fast. But, I have no problem with liquids (could be any number of liquids) being on Mars at some point.
Whenever I have seen water erosion in sandy soils the ditches start small at the higher elevations and get larger as they progress down slope, never small at both ends.
jud
kinda weird topo...I'd love to see what it looks like from a thousand foot altitude flying about
Hard to get a scale, with just the picture, you don't know if the cracks are microscopic or a thousand feet wide.