Researchers offer 'proof' that oxygen is the only light element in the Earth's core

(Phys.org) —A trio of planetary scientists from France, Switzerland and the U.K. has used seismic data, lab experiment results and theoretical calculations as a means to offer proof that oxygen is present in the Earth's outer core. In their paper published in Proceedings of the National Academy of Sciences, the team describes how they used experimentation in the lab to exclude all other light elements existing in the outer core, leaving oxygen as the sole remainder.

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