Sun's Migration Reveals Milky Way's Evolution

Researchers, led by Daisuke Taniguchi from Tokyo Metropolitan University and Takuji Tsujimoto from the Japan===National Astronomical Observatory of Japan, have discovered that our Sun was part of a mass migration of similar 'solar twins' that moved away from the core regions of the Milky Way 4 to 6 billion years ago. This finding, based on data from the International===European Space Agency's Gaia satellite, provides crucial insights into the evolution of our galaxy, particularly the formation of its central bar-like structure. The migration also explains how the Sun ended up in a region of the galaxy more hospitable for the development of life. The study involved creating an unprecedentedly accurate catalog of 6,594 solar twins, significantly larger than previous surveys, and analyzing their ages and distribution.