The Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure reference article from the English Wikipedia on 24-Jul-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure

Watch videos on African life
Timeline of galaxies, clusters of galaxies, and large-scale structure of the cosmos

See also: Large-scale structure of the cosmos