The Hubble Space Telescope captured two merging galaxies called Arp-Madore 417-391.
What
Known
Hubble was able to take a picture of two galaxies that are in the constellation Eridanus, 670 million light-years from our planet. They can be observed in the southern hemisphere of the Earth.
Gravity warped galaxies are twisted intoa large ring that brings their nuclei closer together. The Advanced Camera for Surveys (ACS) was used to capture the image. The National Aeronautics and Space Administration (NASA) says such structures are very rare. Their formation requires a direct collision of galaxies, and not a slow convergence under the influence of gravity.
Note that a tool called ACShas been useful for more than two decades, since the start of the work of the space telescope. The device, focused on searching for galaxies in the ancient Universe, helped map the distribution of dark matter and study the evolution of galaxy clusters.