Iron meteorites point to millions of years of chaos in the early solar system

Iron meteorites point to millions of years of chaos in the early solar system

Asteroid collisions in the early solar system exposed their iron cores to space, allowing them to cool rapidly. (Image credit: NASA / JPL – Caltech)

A large demolition derby, with a chaotic mess of asteroids and ever-collapsing planets, took place in the early solar system between 7.8 million and 11.7 million years after the sun formed, according to a new analysis of iron meteorites as a was once part of metallic asteroid cores.

An international team of researchers analyzed isotopes of palladium, silver and platinum in 18 iron meteorites found on Earth to better understand the development of their parental bodies. Metallic asteroids contain dense iron nuclei and iron meteorites derived from these nuclei, blown up by collisions with other asteroids.


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