4.4 Billion-Year-Old Earth's Fragment Confirmed as Oldest Ever
A tiny crystal of zircon, too small to be seen with the naked eye, may hold the key to determining what really happened shortly after the Earth was formed.
A tiny crystal of zircon, too small to be seen with the naked eye, may hold the key to determining what really happened shortly after the Earth was formed.
The speck measures only 200 by 400 microns, the equivalent diameter of two strands of human hair, but as far as import goes, it's age makes up for its size.
It was extracted fro
25 Feb 2014
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