into helium in their cores. The Sun remains a main-sequence star today.

As the early Solar System continued to evolve, it eventually drifted away from its siblings in the stellar nursery, and continued orbiting the Milky Way's center on its own. The Sun likely drifted from its original orbital distance from the center of the galaxy. The chemical history of the Sun suggests it may have formed as much as 3 kpc closer to the galaxy core.

Solar System birth environment

Like most stars,

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