Scientists Find Fragments of the Original Earth Dating Back 4.5 Billion Years
A groundbreaking discovery traces Earth’s origin to proto-Earth remnants locked inside ancient rocks across the globe.
The Discovery Points to Proto-Earth
The Rocks Carry an Unusual Chemical Signature
The Clues Were Found in Ancient Rock Samples
The Timing Reaches Back 4.5 Billion Years
The Moon-Forming Impact Changed Everything
The Fragments May Have Survived Deep Inside Earth
The Finding Helps Explain Earth’s Starting Ingredients
It Adds a New Layer to Earth’s Origin Story
Scientists Still Need More Evidence
The Discovery Could Reshape Planetary Science
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Earth is often described as a planet with a deep memory, but most of its earliest memories have been erased, melted, buried, or recycled. That is why a new study suggesting that tiny fragments of “proto-Earth” may still survive inside ancient rocks feels so remarkable. Scientists are not simply looking at old stones; they may be looking at chemical traces from the planet before it became the Earth we know today.
The finding centers on rare chemical signatures found in rocks from places including Greenland, Canada, and Hawaii. Researchers believe these signatures may date back around 4.5 billion years, before the giant impact that is thought to have helped form the Moon and dramatically changed Earth’s chemistry. The discovery, reported by MIT and discussed by science outlets, could help scientists understand what our planet was made of before that violent transformation.