Story highlights X-ray spectrometry determines iron dagger came from meteorite

Research suggests ancient Egyptians valued "iron from the sky"

(CNN) New research shows that an iron dagger buried with King Tutankhamun was made from a meteorite.

It even suggests the Egyptians knew what they were working with.

Archaeologists and historians have been fascinated by King Tut's mummified remains and the mysterious objects found in his tomb since their discovery in the 1920s.

King Tut's knife

In the past, scientists have claimed that an iron dagger, found along with a gold blade in King Tut's tomb, may have come from meteorites.

Other ancient Egyptian iron artifacts have also been suspected to be meteoritic, since smelted iron was rarely used.

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