Gutenberg Galaxy

The Gutenberg Galaxy, namedJohannes Gutenberg,inventorprinting, isuniverseall printed books ever published. The term was first used by Marshall McLuhanhis book The Gutenberg Galaxy: The MakingTypographic Man first published1962.

As an estimate ofsize ofGutenberg Galaxy, as2002/2003,British Library claimed thatheld over 150 million items, andLibraryCongress claimed thatheld approximately 119 million items.

Given an estimated average book size6 Mbytes forpurely textual book containing 1 million words, this represents roughly 1,000,000,000,000,000 bytes (10¹⁵ bytes)text.