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Globally, and images of small parts of the surface... you can see things that are tens of metres across, and it can also explore the composition and magnetic field, so it is an awful lot of things. it is very small but it's got a magnetic field. mars doesn't have a magnetic field, and it's bigger. so in some ways it's like the earth. we don't understand why that is. also it's quite like the moon in some ways, in terms of the environment in most areas. there's a lot of geological activity, it has in the past had large volcanic provinces or lava flows. and there's weird things that we haven't se...

It is bigger so it is more like the earth and it is a bit of a battle. we don't mean the understand really why that is. also, it is the moon in some ways in terms of its environment. it is almost airless but it has a lot of geological activity or it has in the past, large volcanic provinces were lava flows cover the surface and also it has got these weird things that we have not seen on other planets like little hollows which appear to be where material from underground little hollows which appear to be where materialfrom underground is escaping to space a bit like melting or evaporating ice s...