Interweb Gems: The History Of Science Fiction Graphic
I found this infographic while surfing the tubes today. I thought it was neat. Enjoy.
Update: One of the kind users at Reddit has sent me a link to where this was originally posted. I saved the image from there a week or so ago and forgot to mark down where I found it. Apologies to the original author for the oversight.
Click for the full-sized version.