Charting Troubled Galactic Waters

- Chris Lintott

The edge of the galactic disc is a complicated place, with the Milky Way’s own stars mixed with the remnants of myriad tiny satellites, ripped apart and consumed by our Galaxy’s gravity. A new paper by an international team uses data from the Sloan Digital Sky Survey to take a look at what might be just such a remnant, a structure known as Triangulum-Andromeda after the part of the sky in which it’s located.