Scientists using NASA's JWST have discovered significant presence of carbon in the early universe, suggesting heavier elements were more common than previously believed.
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Cosmic Dawn
The first billion years after the Big Bang is called Cosmic Dawn, when the first stars and galaxies started to take shape in the universe.
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Stars
Stars form heavy elements at their cores in a process called stellar nucleosynthesis. These elements accumulate until the stars die, releasing their content into space.
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Observations
Using JWST, scientists discovered carbon-rich dust in galaxies just 800 million years after the Big Bang, indicating heavier elements were more prevalent in the early universe.
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Carbon
Scientists believe carbon could have been released as a result of the death of massive stars, which expel their content into space as they die.