Scientists discover 1st evidence of 4.5-billion-year-old 'proto-Earth' buried deep within our planet

Space.comMonday, October 20, 2025 at 4:00:00 PM
PositiveScience
Scientists discover 1st evidence of 4.5-billion-year-old 'proto-Earth' buried deep within our planet
A groundbreaking study has revealed the first evidence of 'proto-Earth,' dating back 4.5 billion years, found in ancient rocks from Greenland, Canada, and Hawaii. This discovery is significant as it provides a rare chemical fingerprint that could shed light on the conditions of our planet before the moon-forming impact, enhancing our understanding of Earth's early history and formation.
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