We are not alone: Our sun escaped together with stellar 'twins' from galaxy center Phys.org'Mass migration' of stars from the Milky Way's center could explain why there's life in our solar system Live ScienceOur Sun May Have Escaped the Milky Way’s Dangerous Center Billions of Years Ago SciTechDailyThe sun and thousands of its twins migrated across the Milky Way just in time Scientific AmericanA mass stellar migration billions of years ago may have helped life get started on Earth Space