So if it’s not standing water, what is it?

Mars rover finds “puddles” on the planet’s surface – space – 08 June 2007 – New Scientist Space:

Update: The researchers have retracted their claim about the possibility of standing water on Mars after readers pointed out the terrain lies on the sloped wall of a crater – see our blog explaining what happened.

A new analysis of pictures taken by the exploration rover Opportunity reveals what appear to be small ponds of liquid water on the surface of Mars.

The report identifies specific spots that appear to have contained liquid water two years ago, when Opportunity was exploring a crater called Endurance. It is a highly controversial claim, as many scientists believe that liquid water cannot exist on the surface of Mars today because of the planet’s thin atmosphere.

Even if it’s ice that’s pretty weird. Makes you wonder if it’s entirely an artifact.

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