Browse with Plus: The scale of the Universe

How big is the Universe? And how small is the smallest thing within it? This cute website developed by Cary Huang puts things into perspective. It lets you explore the entire range of scales, from the smallest length (the Planck length) all the way up to the entire Universe, via atoms, people, giant earthworms, planets, galaxies and more.




All the numbers in this are written in the opposite order from what I'm used to (e.g. 10^6 x 4.2m as the distance across the US). Is that the convention in some places?

No the author just wants to be different from everybody else and decided to invert the element order of the scientific notation that is:
-> (real number coeficient) +- (real number error) x base(integer usually 10) ^ exponent(integer)

No - I think it's to emphasize the scale - the power of 10 is more significant than the coefficient (which allows for relative scale within any given power of ten).

Hi, this is a very interesting web page and I have enjoyed read­ing many of the arti­cles and posts con­tained on the web­site, keep up the good work and hope to read some more inter­est­ing con­tent in the future. Thank you so much.