Titled Cosmography of the Local Universe, this short video map will take you on a tour showing the positions and movements of galaxies and clusters of the known universe. It's simply amazing how many galaxies are out there.
Looking like tiny islands in a vast ocean, the roughly 30,000 galaxies in this detailed map extend out to around 350 million light-years from our own Milky Way. These cosmic objects don?t float alone but tend to group together in clusters of hundreds or superclusters of thousands of galaxies. Enormous voids containing relatively little material stretch between the dense threads of galactic gas and dust.
The complexity of what we are seeing is overwhelming, says astronomer Helene Courtois of the University of Lyon in France, lead author of a paper that appeared on arXiv.org on June 1, as she narrates the 17-minute video above.
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