HAHAHA, i would assume the same as the speed of light. it would basically just be the speed of the disappearing light...186,282.397 miles per second.

An easier answer:
"The Speed of Dark is a near-future science fiction novel by American author Elizabeth Moon, first published as a paperback in 2002. The story is told from the first person viewpoint of an autistic computer programmer. It won the Nebula Award for Best Novel in 2003, and was also an Arthur C. Clarke Award finalist."
-via Wikipedia.com
http://en.wikipedia.org/wiki/The_Speed_of_Dark

This post was originally written by Brandon Singer
University of Arizona · Biology · 07 Aug 2007