Geologists Discover The First Evidence of 4.5-billion-year-old “proto-Earth” – astrobiology.com

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  1. Geologists Discover The First Evidence of 4.5-billion-year-old “proto-Earth”  astrobiology.com
  2. Potassium-40 isotopic evidence for an extant pre-giant-impact component of Earth’s mantle  Nature
  3. Scientists Just Found a Piece of Earth Older Than…

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