NGC 1313, also known as the Topsy Turvy Galaxy, is a barred spiral located 13 million light-years away in the constellation Reticulum. Its uneven shape and off-center rotation make it unique, and it is currently undergoing a strong episode of star formation, which astronomers call a "starburst."
At left and center, respectively, are Swift UVOT images in the optical (v, b, and u filters) and ultraviolet (uvw1, uvm2, and uvw2 filters). The panel at right shows X-ray observations (0.2-10 keV) from Swift's X-ray Telescope. It reveals ultraluminous X-ray sources thought to be massive black holes rapidly accreting gas.