Hi guys,
I just registered because I would like to know if anybody has got explanations for certain features appearing in the Mars surface and visible with Google Mars...
Can anybody tell me why the lower regions (in blue) are clearly less cratered than the higher ones (orange-red)?
Is it possible that those lower regions were filled up long time ago with water and therefore the craters were eroded?
What about some features that seem to be rivers? ... does anybody know if there is any scientific explanation for that? Does anybody know what does the scientific community have to say for the same?
Thanks in advance for your responses and regards.