
Galactic road trip of sun-like stars may explain Earth's life-friendly place
A Gaia-based study identified about 6,600 Sun-like stars with similar ages and compositions that likely migrated outward from the Milky Way’s crowded center during the formation of the galaxy’s central bar 4–6 billion years ago, suggesting the Sun itself may have moved into a quieter outer disk and offering a possible explanation for Earth’s habitable environment.




