The most well-known use of helium is as a lifting gas in balloons and airships.
Helium is a noble gas, which means it does not react with almost anything and can be used as a protective gas.
Liquid helium has the lowest boiling point of all liquids. It provides the low temperature required for superconductivity.
Most helium on Earth comes from the alpha particles (helium nuclei) released during radioactive decay of heavy elements.
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