I posted that here a few months ago.
Boothbabe posted the first tool back in 2010. I think it's been reposted a few times since, though this post is at least the second tool...still, I can't complain about repeat threads about this. It's something that people should be interested in, even just in passing.
haha is it weird that i had a smile on my face when i was looking at this? this is awesome! im taking a physics class right now (a requirement for my gen. ed. classes...not bc i want to) and ive slowly become more interested in stuff like this...
I don't think it's at all weird to be interested in this sort of thing! The universe is an absolutely fascinating place. Even if you aren't into the nitty gritty physics of it all, the incredible scale and vastness (or the absolute microscopical) of things in the universe should be plenty to inspire awe and wonder.
I highly, highly recommend
A Short History of Nearly Everything by Bill Bryson. You get a lot of the awe and wonder as well as a great history of our scientific knowledge in a uniquely accessible and humor-filled manner. Totally readable by those without any science background.