A small, blue-green world in one of the less fashionable sectors of the galaxy. It was demolished by the Vogons in order to make way for a hyperspace bypass.

Two humans survived; Arthur Dent, and Trillian. Two mice and some dolphins also escaped.

The Earth was often mistaken for a planet. It was, in fact, a powerful supercomputer running a program designed by hyper-intelligent pan-dimensional beings.