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Enhanced Uranus showing Polar Cap and possible Aurora

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Newbie has same worn question

Started by khking, 01/16/2008 10:45PM
Posted 01/16/2008 10:45PM Opening Post
I was wondering how we know a meteorite is from Mars, or even the moon? In the case of the moon, rocks are available so I would guess we can go by a baseline sampling if all lunar material is similar in structure. How can we be sure a meteorite is Martian? Thanks!