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Dark dwarf galaxy found at a cosmological distance - We believe that galaxies like our own formed over cosmic time through the mergers of many smaller galaxies. We can test this theory by searching for the tell-tale signatures of relics that survive as small dwarf galaxies located around the edges of more massive galaxies. Around our own galaxy, astronomers have failed to find these dwarf galaxies in the number that is expected. Therefore, it has been suggested that the Milky Way could be a strange case, galaxies form in a different way than expected, or that these dwarf galaxies are made up almost exclusively of dark matter ... Read more

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