Hi HN, my name is Jacob, I'm the guy that made wtfnasa. Here's my tl;dr reaction to the virality that this project has seen:

wtfnasa was not made to go viral, it was made to be a simple intro to CodeIgniter & a reaction to people upset with NASA, I put ~zero thought into having 'fuck' in the title, it was built in about 10 hours (design, build, data entry, & launch) last Wednesday & Thursday, it had 9 unique visitors as of Friday at noon & right now it has just under 40k. I'm considering removing the 'f word' based on the loads of kickback I've gotten from it, I'd love to hear your thoughts. Thanks!