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The Hubble Space Telescope captured this image a pair of gravitationally interacting galaxies called Arp 147. The two galaxies happen to be oriented so that they appear to mark the number 10.

This once-in-a-lifetime image shows a pair of gravitationally interacting galaxies called Arp The galaxy on the left, is relatively undisturbed, whereas the galaxy on the right, is a messy ring of intense star formation. Image: NASA/ ESA/ M.