Centre of the Earth could hold large reservoir of iron–helium compounds
By 
Tim Wogan2025-03-10T14:30:00
Compounds containing helium and iron can be stable at ambient pressures
Iron can form compounds with helium at pressures as low as 5GPa – about 50,000 atmospheres – researchers in Japan report. This result could provide novel insight into the chemistry of the most abundant noble gas in the universe and suggests that the Earth’s core could hold a large reservoir of primordial helium-3.