I like this flash animation from NASA which is a modern version of the classic video Powers of Ten and travels from billionths of a yoctometre (10 -24 metres) up to tens of Gigaparsecs (about 3.1 x 10 25 metres). A journey of 60 powers of 10 from the Planck length of 1.616199(97)×10 -35 metres to the size of the observable universe at 10 27 metres.
“From where neutrinos are like suns to where galaxies are like dust”
It takes a few seconds to load.
The k2p blog 