 A nine-year analysis of about 10,000 sun-like stars in the Milky Way bulge reveal that our galaxy's hub is a dynamic environment of stars of various ages and compositions zipping around at different speeds. This supports the theory that the bulge formed later in the galaxy's lifetime, slowly evolving after the first generations of stars were born. In this scenario, some of the stars in the bulge might be younger, with their chemical composition enriched in heavier elements expelled from the death of previous generation stars. And they should show a different motion compared to the older stars. This is exactly what the Hubble study showed to be the case.