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What would happen if the yardstick that astronomers used to measure the universe was too long?
This huge change in chemical abundance alters prevailing theories about the structure and evolution of stars. For instance, the sun's chemical composition is a primary piece of evidence used in telling the story of our galaxy's evolution: the cycle of birth and destruction that led to the creation of Earth and its heavy elements.
Since the chemical make-up of the sun is a reference point for the composition of other objects in the universe, many models that relied on the higher abundances were also put into question by Allende Prieto's assertion.