What is the oldest material on Earth?

New research reveals that grains in meteorite that hit our planet 50 years ago predate the Solar System

Murchison Meteorite
The Murchison meteorite on display at the National Museum of Natural History in Washington D.C.
(Image credit: Wikimedia Commons)

The oldest material known to exist on Earth has been discovered in a rock that crashed into rural southeastern Australia in 1969, scientists have announced.

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