Ancient stars located surprisingly near to our sun formed less than a billion years after the Big Bang — suggesting part of the Milky Way is much older than previously thought, a study has found.
Most stars, including the sun, are located in a thin disk rotating around the center of the galaxy. Researchers thought this disk formed around 8 to 10 billion years ago, but with the help of machine learning, they've found some of its stars are more than 13 billion years old.
