It’s full of galaxies! This new image from the Hubble Space Telescope and the ESO’s New Technology Telescope shows four of the seven galaxies in the galaxy group HCG 16: NGC 839, NGC 838, NGC 835, and NGC 833. Check out those glowing centers and wispy tails of gas!

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The Hubble Ultra Deep Field has a few more. There are almost no individual stars in this exposure; virtually everything you see is a galaxy.