![](https://i.kinja-img.com/image/upload/c_fit,q_80,w_636/5f4d5304f1c35f629ea084373f3269e6.jpg)
Evidence of the Milky Way’s past is encoded in wrinkles of stars, whose positions and movements have shifted as our galaxy has interacted with other galaxies, sometimes violently. Now, a team of astronomers say that the most recent of those cosmic collisions was billions of years later than was thought, making the…