Credit: A. Smercina/M.J. Durbin/J. Dalcanton/B.F. Williams/University of Washington/NASA/ESA
On the left is a composite image of the Triangulum galaxy, made by overlaying individual images taken by the Hubble Space Telescope as part of the PHATTER survey. Distributions of old and young stars — center and right, respectively — within the PHATTER survey area showcase contrasting structures in the Triangulum.