That is a great photo. It’s almost Earth like, and it looks as if there has been water
erosion on Mt. Remarkable in the two runnels down the side of the mount.
And APOD doesn’t have enough of their own pictures? They need subscriber
submissions? I can send them a whole big bunch of cat pictures, but that’s about it.
;-)
Mars has water locked up as ice, and the erosional features are from transient events, which get their energy from impacts by space debris. (imho)
Clay Deposits Don’t Prove Existence of Ancient Martian Lakes [2012]
http://www.freerepublic.com/focus/chat/2932496/posts
Red planet’s hue due to meteors, not water [2003]
http://www.freerepublic.com/focus/chat/1756678/posts