 Here's an image of two galaxies, one is seen almost face-on and the other is edge-on. They were observed by Hubble in 2017 to celebrate its 27th year in orbit. In the face-on galaxy we can see spiral arms and the blue patches of ongoing star formation and young stars. In the edge-on galaxy we can see huge swaths of dust responsible for the molted brown patterns. We also see a burst of blue to the left side of the galaxy indicating a region of extremely vigorous star formation. Their galaxy centers are 35,000 light-years apart. At their closest point the galaxies are separated from each other by only 7,000 light-years. Given this very close arrangement, astronomers are intrigued by the galaxy's apparent lack of any significant gravitational interaction. The long tidal tails and deformations in other structures that are typical of galaxies lying so close together are missing completely.