1. Abell 520 galaxy cluster

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    • Abell 85 in 60 Seconds

      01:17

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      The composite image shows the galaxy cluster known as Abell 85, which is located about 740 million light years from Earth.

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      • Abell 2052 in 60 Seconds

        01:56

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        The galaxy cluster Abell 2052 is found some 480 million light years from Earth. At the center of Abell 2052 is a giant elliptical galaxy, and within that is a supermassive black hole.

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        • Abell 383 in 60 Seconds

          01:42

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          Dark matter is mysterious. We know that it is invisible material that does not emit or absorb any type of light, but we can detect it through the gravitational effects it has on material we can see.

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          • Abell 30 in 60 Seconds

            01:47

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            A planetary nebula is formed in the late stage of the evolution of a sun-like star, after it expands to become a red giant.

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            • Abell 1689 in 60 Seconds

              01:30

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              Abell 1689 is a massive cluster of galaxies located about 2.3 billion light-years away.

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              • Abell 3376 in 60 Seconds (High Definition)

                01:29

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                This composite image of the galaxy cluster Abell 3376 shows X-ray data from the Chandra X-ray Observatory and the ROSAT telescope along with an optical image from the Digitized Sky Survey…

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                • Abell 2744 in 60 Seconds (High Definition)

                  01:53

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                  One of the most complicated and dramatic collisions ever seen between galaxy clusters is captured in this new composite image.

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                  • Abell 3376 in 60 Seconds (Standard Definition)

                    01:27

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                    This composite image of the galaxy cluster Abell 3376 shows X-ray data from the Chandra X-ray Observatory and the ROSAT telescope along with an optical image from the Digitized Sky Survey…

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                    • Abell 2744 in 60 Seconds (Standard Definition)

                      01:53

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                      One of the most complicated and dramatic collisions ever seen between galaxy clusters is captured in this new composite image.

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