We see everything from sand dunes covered with frost, water ice clouds hanging over volcanoes and ancient craters being eroded by high winds.
More Quotes from Michael Malin:
Despite ground fog that obscures part of the surface in these images, we can see much more surface detail than we've ever seen before, which suggests that the 75-degree south latitude landing zone is quite a bit more rugged and geologically diverse than we had previously thought.Michael Malin
Some of the things observed changed in few weeks or months, and others have changed over years. Most of the discoveries that we've made came during the extended mission.
Michael Malin
The significance of this is that Mars is experiencing climate change, because the present conditions are not conducive to the formation of all this CO2 to begin with in the polar region. So sometime in the distant past, Mars was colder than it is now to form a permanent CO2 deposit. Subsequent to that, it has warmed and we are seeing that earlier deposit being eroded away.
Michael Malin
Mars was very cold and dry, ... All the features we are seeing reinforce that view, that's it's cold and dry today.
Michael Malin
It is possible they were set in motion by strong wind or by a 'Mars quake,'
Michael Malin
Mars is an active planet, and over a range of timescales changes occur, even in the surface.
Michael Malin
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Based on Topics: Water QuotesBased on Keywords: craters, volcanoes
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