• kerrigan778@lemmy.world
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      9 days ago

      There are some good articles explaining it but the tldr is it was named when we were unable to see through the galactic plane to what was exerting such an enormous amount of gravitational pull on everything.

      (Even more tldr: It’s a galaxy supercluster with another, unbelievably large galaxy supercluster behind it all lying in an area of space obscured to us by our own galaxy)