You’ll recall the big news about the Museum’s acquisition of rare fossil meteorites a few years ago. These rocks from space fell into an ancient sea about 470 million years ago, and after three years at the Museum, continue to yield new information at the hands of Pritzker Associate Curator Philipp Heck and colleagues.
A bit more than 14 years ago, a 2-6 ton space rock entered the Earth's atmosphere. It broke up above Chicagoland, and up to 100 kg of fragments fell into southern suburb of Park Forest, which now lends its name to the meteorite. The new study published by Matthias Meier, a researcher at the Swiss Federal Institute of Technology and a former graduate student of Robert A.
The Field Museum of Natural History in Chicago opened a brand new exhibit on meteorites in February 2017. The exhibit features an exclusive display of four rare fossil meteorites that fell to Earth into an ocean 466 million years ago. In the Americas this is the only place which has fossil meteorites on exhibit. These rare specimens were loaned from private collector Mario Tassinari from Sweden.
On Monday, February 6, 2017 around 1:30 AM local time many inhabitants of the Midwest saw a bright fireball shooting across the night sky. Some even heard a sonic boom. The Field Museum's Invertebrate Collections Manager Paul Mayer woke up from the sonic boom: "I was staying in Fredonia, Wisconsin and was woken up by a large boom that shook the whole house. It sounded like thunder and I thought maybe it was a train hitting something. I got up and looked out the window, but did not see anything.
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?