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4.56-Billion-Year-Old Space Rock from Georgia Home Proposed as McDonough Meteorite

Researchers plan a peer-reviewed study to test its origins in a 470-million-year-old asteroid breakup

Overview

  • University of Georgia researchers have classified 23 grams of fragments from the June 26 fireball as a low-metal ordinary chondrite formed about 4.56 billion years ago.
  • The team has proposed naming the specimen the McDonough Meteorite and will submit this to the Meteoritical Society’s nomenclature committee.
  • UGA will retain a portion of the recovered 50 grams for ongoing study while exhibiting other fragments at the Tellus Science Museum.
  • Scientists will publish a detailed paper on the meteorite’s composition and pre-impact speed in the coming months.
  • Further analyses will evaluate a developing hypothesis that the meteorite originated in a main-belt breakup event 470 million years ago.