One hundred years ago, on June 30th, 1905, Albert Einstein's paper, Zur Elektrodynamik bewegter Körper (On the Electrodynamics of Moving Bodies) was received for publication by the editors of Annalen der Physik. This paper elevated the principle of relativity to a cornerstone of physics and set in motion the spacetime revolution. Celebrate this anniversary by reading an English translation of this milestone in modern physics online at this site and, if you're visiting Switzerland, don't miss the special Einstein exhibition at the Historisches Museum Bern (June 2005 through April 2006).