... For billions of years, massive stars in our Milky Way Galaxy have lived spectacular lives. ... The center of our Galaxy is obscured in visible light by dark dust that rotates with the stars in the Galactic Plane. ... Young Star Clusters in an Old Galaxy . ... Elliptical galaxy NGC 4365 is old, probably about 12 billion years old. Like most elliptical galaxies, this galaxy was thought to be full of old stars too, its burst of star forming activity having long since ended. ...