Primordial Helium, Left Over From the Big Bang, is Leaking Out of the Earth - Universe Today

Primordial hydrogen lurks in Earth's core, deposited there when Earth was born. Its presence tells us that Earth formed in the presence of nebular gas.

Something ancient and primordial lurks in Earth’s core. Helium 3 (3He) was created in the first minutes after the Big Bang, and some of it found its way through time and space to take up residence in… [+12917 chars]

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