Sad to hear.
I initially only knew him through the big help he was on the tech forum but through the folding project we had some conversations. He seemed like a nice guy.
He gave me the link to his blog on Renaissance art after he'd seen one of my profile pics and wanted feedback. I didn't have the time to get into it much, but I bookmarked it so I could read it later. Sadly, as these things go, you tend to forget and I feel sad now that I never got to give him my thumbs up for his blog.
There is the small hope Astro made a backup of himself and is now roaming the internet as an AI. If so, awesome blog, Astro! And may you rest in peace!