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Opportunity Finds an Iron Meteorite Opportunity Mars Exploration Rover has recently discovered an iron meteorite. According to the rover's spectrometers, it consists of iron and nickel and it's size is about the size of a basketball.Only a small fraction of the meteorites fallen on Earth are similarly metal-rich. Others are rockier. As an example, the meteorite that blasted the famous Meteor Crater in Arizona is similar in composition. Like a human field geologist, Opportunity rover has the capabilities to scout its surroundings for interesting rocks and soils, to move to those targets and to examine their composition and structure.
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