Astronomers Just Reconstructed a Galaxy’s 12-Billion-Year History

By reading the chemical “fingerprints” of a distant galaxy, astronomers reconstructed its 12-billion-year evolution. This new method could reveal how galaxies—including our own—were built over cosmic time. A team of astronomers led by the Center for Astrophysics | Harvard and Smithsonian has, for the first time, applied galactic archaeology to uncover the history of a [...]