New Clues to Earth's Formation From Ancient Helium Leaking From the Planet's Core - SciTechDaily

Vast stores of helium from the Big Bang lingering in the core suggest Earth formed inside a solar nebula. Helium-3, a rare isotope of helium gas, is leaking out of Earth’s core, a new study reports. Because almost all helium-3 is from the Big Bang, the gas le…

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 … [+3454 chars]

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