King Tut's Space Dagger

Probably no tomb has been studied more than King Tutankhamen's, and the possessions he was buried with still amaze us. The most mysterious and surprising among them is a "space dagger." It's make of iron from a meteorite, crafted with technology that the Egyptians didn't have at the time. That doesn't mean that aliens gifted him the knife, but it's pretty impressive anyway. How do they know the iron in the dagger came from outer space? That requires some really modern science tech, like X-ray fluorescence that reveals nickel content and Widmanstätten patterns. If you don't know what Widmanstätten patterns are, well, I didn't wither until now. They're from outer space!