One of the oldest known stars in the universe lives in the Milky Way, new study finds. At 13.5 billion years old, the tiny red dwarf, which is just one-seventh the mass of the Sun, has been around since 300 million years after the Big Bang (when the universe was just 2% its current age).

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One of the oldest known stars in the universe lives in the Milky Way, new study finds. At 13.5 billion years old, the tiny red dwarf, which is just one-seventh the mass of the Sun, has been around since 300 million years after the Big Bang (when the universe was just 2% its current age).