"Half-Baked Asteroids Have Earth-Like Crust"

       After searching for meteorites in Antarctica, Researchers have discovered meteorites that indicate some asteroids contain a mineral that was previously thought to only grow on Earth. This mineral, called Adesite, is an igneous rock that is created by volcanoes and colliding tectonic plates. By studying the isotope ratios of oxygen in the meteorite, scientists deduced that the meteorite in fact originated on an asteroid rather than a planet or our moon. This evidence is ground-breaking because it proves that some asteroids have crusts that are very similar to the Earth's: crusts that are composed of interminably-shifting tectonic plates. To support this sort of planet-like crust, researchers estimate that the asteroid's diameter must have been approximately one-hundred kilograms. Scientist hope to study these kinds of asteroids and their crusts to create a better understanding of the Earth's crust and the crust-forming process.