Did you know?
Kamacite looks like plain steel but cannot be made on Earth. This iron-nickel alloy forms only when the core of a shattered planetesimal cools a few degrees every million years in deep space, leaving a pattern no furnace can copy.
Taenite, a nickel-rich alloy laced through iron meteorites, works like an ancient recorder. Tiny zones in it froze the magnetic field of the early solar system, letting scientists read the cores of worlds long destroyed.