Thanks, I will show this to my 7 yo son! When I was a boy growing up in Texas I used to go to the Wednesday Night Physics Movies at UT, and one of the movies they played was called something like "Orders of Magnitude". It was a celluloid version of the same thing shown here, and it was very good for teaching me the scales of the universe when I was a young proto-physicist. Rowan. On Tue, Feb 14, 2012 at 9:18 PM, Simon Plouffe <simon.plouffe@gmail.com>wrote:

Hello,

this flash animation (interactive) shows the scale of common things from the planck size to giant clusters up to the known universe which is 10^27 meters.

Have fun, it's worth a look.

http://www.htwins.net/scale2/

and a nice day. Simon Plouffe

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