Sub-Etha

Sub-Etha is a fictional computer network. Douglas Adams' science fiction comedy, The Hitchhiker's Guide to the Galaxy, mentions Sub-Etha as the vast telecommunications network used throughout the Milky Way for any kind of data transmission like hitchhiking a spaceship or browsing through the pages of the Hitchhiker's Guide to the Galaxy itself.

	v • d • e The Hitchhiker's Guide to the Galaxy By Douglas Adams
Books:	The Hitchhiker's Guide to the Galaxy \| The Restaurant at the End of the Universe \| Life, the Universe and Everything \| So Long, and Thanks for All the Fish \| Mostly Harmless \| Young Zaphod Plays it Safe \| The Salmon of Doubt\| The Original Radio Scripts
Media:	Radio series (Phases 1 & 2, Phases 3, 4 & 5) \| TV series \| Movie \| Computer game \| Differences between versions \| Cast lists
Characters:	Arthur Dent \| Ford Prefect \| Zaphod Beeblebrox \| Marvin \| Trillian \| Slartibartfast \| The Guide \| Minor characters
Places:	List of places \| Total Perspective Vortex \| Heart of Gold \| Wikkit Gate \| Starship Titanic \| Galactic Empire \| Whole Sort of General Mish Mash
Miscellanea:	The Answer to Life, the Universe, and Everything \| Babel fish \| Bistromathic drive \| Cultural references \| h2g2 \| Infinidim Enterprises \| Infinite Improbability Drive \| International Phenomenon \| Notable phrases \| Pan Galactic Gargle Blaster \| Point-of-view gun \| Races and species \| Somebody Else's Problem field \| Sirius Cybernetics Corporation \| Towel Day \| Vogon poetry \| Other miscellanea