Created by Cary Huang, this interactive scale of the universe shows the relative sizes of everything from quarks to the Hoover Dam. Be prepared for some cosmic gee-whiz moments when you get out to the nebulas. The objects are complimented with cheeky facts such as "If you were to stretch your skin over Vatican City, the coating would be 200 nanometers thick." Just a reminder that there's still an incomprehensibly huge amount of 'old nature' out there left to explore.
The Scale of the Universe