Edit: Sorry, looks like this had already been spotted!
Web developer here. Don't know if it's already been spotted, but there's an interesting HTML comment when viewing the page source:
โThe moon I see now is the same moon I saw before. Except that before, when I looked at it, it was in anticipation of what it would be like when I got there. That's behind me now." Buzz Aldrin
There's also several odd comments that appear to be stars? You can see what I'm talking about if you right click on the page and choose "View page source" in Chrome.