This joint episode of the Hubblecast and ESOcast presents Abell 2744, an unusual cluster of galaxies nicknamed "Pandora's Cluster" by the astronomers who have studied it. Looking at the galaxies, gas and dark matter in the cluster, scientists have reconstructed the series of huge collisions that created it, and have uncovered some strange phenomena never seen together before.
More information: spacetelescope.org/videos/heic1111a/
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Hubblecast features news and Images from the NASA/ESA Hubble Space Telescope.
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International Olympiad on Astronomy and Astrophysics – Volos 2013-HDR timelapse