
Helium-3: A Rare Isotope Locked Within Earth’s Core
Recent research indicates that Helium-3, a rare isotope formed during the early solar system, may be locked within Earth’s solid core. This discovery could provide insights into how quickly the planet was formed. Unlike helium-4, which is commonly produced through radioactive decay, helium-3 originates from the primordial gas cloud that shaped the solar system. While…