Scientists discover 'alien metals' in ancient gold-plated treasures

A gold-coated cap and bracelet contained the extraterrestrial material from a meteor that crashed into Earth one million years ago .

Meteoric iron is an early-universe protoplanetary disk remnant found in meteorites made of iron and nickel.

The team of Spanish and Saudi Arabian scientists measured molecules in each of the pieces, allowing them to look for traces of iron-nickel alloy.