Max Planck Institute

An artist's impression of the collision between early Earth and Theia. Because Theia formed in the inner part of the solar system, the Sun can be seen in the background. Credit: © MPS / Mark A. Garlick

Moon rocks reveal new clues about Theia – the planet that disappeared in the collision that formed the moon

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Precise analysis of iron isotopes in rocks from Earth and the Moon reveals that Thea – the body whose impact created the Moon – was likely born in the inner part of the solar system, even closer to the Sun.
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