Mineralogy

Today’s rare meteorites were once common

Four hundred and sixty-six million years ago, there was a giant collision in outer space. Something hit an asteroid and broke it apart, sending chunks of rock falling to Earth as meteorites since before the time of the dinosaurs. But what kinds of meteorites were making their way to Earth before that collision? In a new study in Nature Astronomy, Field Museum scientists have tackled that question by creating the first reconstruction of the distribution of meteorite types before the collision.

Video: We Are All Stardust

When a meteor hits the earth, there is the possibility that it brings something very rare along with it:  cosmic stardust older than our Solar System.   Dr. Philipp Heck uses a combination of astronomy, geosciences and chemistry, to hunt for these presolar grains, which offer glimpses into our galaxy's past.  Read more about Philipp's research and the Pritzker Center for Meteoritics and Polar Studies.

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