... Galaxy Dwingeloo 1 Emerges . ... But if you look closely at the center of the above photograph, you will see a whole spiral galaxy behind the field of stars. ... Spirals have most of their bright stars, gas, and obscuring dust in a thin disk. Comet Hale-Bopp is That Bright . ... It's not a star, it's Comet Hale-Bopp. ... In yesterday's episode our hero, the Cartwheel galaxy, had survived a chance cosmic collision with a small intruder galaxy - triggering an expanding ring of star formation. ...