where does the world's helium come from
Most helium in the universe is helium-4, the vast majority of which was formed during the Big Bang
Helium
 Most helium in the universe is helium-4, the vast majority of which was formed during the Big Bang
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Helium [SEP] Introduction
This is due to the very high nuclear binding energy (per nucleon) of helium-4, with respect to the next three elements after helium. This helium-4 binding energy also accounts for why it is a product of both nuclear fusion and radioactive decay. Most helium in the universe is helium-4, the vast majority of which was formed during the Big Bang. Large amounts of new helium are being created by nuclear fusion of hydrogen in stars. Helium is named for the Greek Titan of the Sun, Helios. It was first detected as an unknown, yellow spectral line signature in sunlight, during a solar eclipse in 1868 by Georges Rayet, Captain C.