vesuvius paintings

Campi Phlegraei is a firsthand report which documents the late eighteenth century eruptions of Mount Vesuvius. Written by Sir William Hamilton, the British envoy to the Neapolitan royal court in 1764,

IN THE METAL CORES OF PARTIALLY MOLTEN ASTEROIDS, iron-nickel alloys crystallized in a distinctive pattern known as the Widmanstätten structure. This pattern is named after one of the first people to observe it some 200 years ago, Count Alois de Widmanstätten. The pattern forms only deep inside planetary bodies that take millions of years to cool. Iron never crystallizes this way on Earth's surface, so any piece of metal showing this pattern on Earth is definitely from a meteorite.