pomarede, "Regardless, the beauty of the local universe of galaxies is evident in the image where several huge superclusters of galaxies - clusters of galaxy clusters - can also be seen."
The Sloan Great Wall: Largest Known Structure? #APOD #TBThursday
https://apod.nasa.gov/apod/ap071107.html#cosmology #galaxies #superclusters #sloangreatwall #universe #astronomy #astrophysics #astrodon #2dF #survey #space #science #research #cosmography