Update: I have added history states meaning you can bookmark / share links to the thing you're currently zoomed in on and looking at. I'm off to bed now but if

Update: I have added history states meaning you can bookmark / share links to the thing you're currently zoomed in on and looking at. I'm off to bed now but if anyone has any requests or feedback feel free to keep posting - I'll check tomorrow. Thanks everyone for your support, and especially NASA for providing such wonderful material!