The Building Blocks of Earth Could Have Come From Farther out in the Solar System - Universe Today

Part of Earth's bulk came from asteroids that formed well beyond the Solar System's frost line, according to a new study.

Earth formed over 4.5 billion years ago via accretion. Earth’s building blocks were chunks of rock of varying sizes. From dust to planetesimals and everything in between. Many of those chunks of rock… [+8831 chars]

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