The radiation the researchers used in their testing is composed of highly charged iron particles, which are relatively common in space.

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But the dozens of fragments that have been found so far point to a fairly common, stony asteroid with traces of nickel and iron.

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They said unexplained fatigue was a common problem in doctors' surgeries, but it was as yet unknown whether iron supplements could help these women.

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It was an open cart with two wooden-spoked, iron-rimmed wheels, not the old automobile tires that you used to see on a common utility wagon.

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