New Clues to Earth’s Formation From Ancient Helium Leaking From the Planet’s Core

The center of Lagoon Nebula, captured by the Hubble Telescope. Nebulae are the primary sources of helium-3, and the amount of He-3 leaking from the Earth’s core suggests the planet formed inside the solar nebula, according to a new study in the AGU journal Geochemistry, Geophysics, Geosystems. Credit: NASA, ESA
Vast stores of helium from the DOI: 10.1029/2021GC009985
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