Probably no tomb has been studied more than King Tutankhamen's, and studies show he was a young king who was fabulously wealthy but suffered from disabilities and early death due to royal inbreeding. However, the many royal possessions he was buried with still amaze us. The most mysterious and surprising among them is a "space dagger." It's a finely crafted dagger made of iron from a meteorite, made using 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 we 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. And if you don't know what Widmanstätten patterns are, well, I didn't either until now. They're from outer space! SciShow is glad to explain them to us.