It happened on Sunday, November 18, peacefully, without pain, after long illness.
To several generations of physicists, Sidney was guru, clown-prince, and zen-master. Sidney was the centerpiece of a thousand stories from the time that he was just a loud-mouthed brilliant fifteen year-old aka Squidney rampaging into Chicago’s sci-fi fan community.
There’s a lot more to say but I’m too sad to say it right now. We loved you, Sidney.
As for how Sidney would like to be remembered–this photo by Lubos Motl is simply perfect: