The document outlines the history and timeline of the Internet from 1957 to today. It begins with the Soviet Union launching Sputnik I, leading the US to form ARPA and launch their first satellite. ARPA then began the ARPANET computer network in 1966, connecting computers at UCLA and Stanford in 1969. Email was invented in 1973. The ARPANET was shutdown in 1989 after 20 years. Tim Berners-Lee then invented the World Wide Web in 1991. In the early 1990s, the Internet became available to the public and is now used by millions through popular sites like Google, Facebook, and Twitter.