What Surprising Element Makes Up 75% of the Universe?

Category: Science > Hydrogen

Hydrogen, the simplest and most abundant element in the universe, makes up about 75% of its elemental mass. This lightweight gas is fundamental to the creation of stars through the process of nuclear fusion, where hydrogen nuclei combine to form helium and release immense amounts of energy. In fact, the life cycle of stars, from their birth in nebulae to their end as supernovae or black holes, is heavily influenced by hydrogen. This element not only plays a crucial role in stellar processes but also contributes to the formation of galaxies, making it a cornerstone of cosmic evolution. Understanding hydrogen's properties and behavior helps scientists unlock the mysteries of the universe, from the Big Bang to the structure of distant galaxies.

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